diff --git a/get_nib.py b/get_nib.py
index 7259e8d38504f09d278c3499122dc40673d76504..665fe07fea42f32131fbbe0dfb498dc935957e3d 100644
--- a/get_nib.py
+++ b/get_nib.py
@@ -215,11 +215,7 @@ class getnib:
       filename, _filter = QFileDialog.getOpenFileName(
         self.dlg, "Select a file ","", 'geo-files (*.shp *.geojson *.gpkg *.gml *.jpg *.tif);; All files (*.*)')
       self.dlg.lineEdit_file.setText(filename)
-      # self.dlg.lineEdit_file.setStyleSheet("QLineEdit"
-                          # "{"
-                          # "background-color : white"
-                          # "}")
-      self.dlg.radioButton_file.setChecked(True)
+      self.dlg.radioButton_file.setChecked(True)  # In case you choose a file directly without first chosing this option
 
     def show_help(self):
         """ Display application help to the user. """
@@ -235,7 +231,7 @@ class getnib:
         transformContext = QgsProject.instance().transformContext()
         xform = QgsCoordinateTransform(sourceCrs, destCrs, transformContext)
         # Forward transformation: src -> dest
-        # Computes length and height in LAE regardless input crs
+        # Computes length and height in LAEA regardless input crs
         ll = xform.transform(QgsPointXY(xmin,ymin))  # Bounding box's lower left corner
         ur = xform.transform(QgsPointXY(xmax,ymax))  # Bounding box's upper right corner
         # Get the maximum height and length of the bounding box (limit is set to 50 km)
@@ -249,40 +245,46 @@ class getnib:
         return ok
 
     ## Bounding box ##
+
+    # When you change your mind during input (started input of one bb-option and then chnages to another bb-option),
+    # e.g. have entered a length or selected a file, but change your mind and click Use current map canvas insted.
+    # Then length and the file should be wiped out.
+    def notUdbb(self):
+        self.dlg.lineEdit_lengthbb.clear()
+        self.dlg.lineEdit_heightbb.clear()
+        self.dlg.lineEdit_lengthbb.setStyleSheet("QLineEdit"
+                            "{"
+                            "background-color : white"
+                            "}")
+        self.dlg.lineEdit_heightbb.setStyleSheet("QLineEdit"
+                            "{"
+                            "background-color : white"
+                            "}")
+
+    def notFile(self):
+        self.dlg.lineEdit_file.clear()
+        self.dlg.lineEdit_file.setStyleSheet("QLineEdit"
+                            "{"
+                            "background-color : white"
+                            "}")
+
     # When "Use current map canvas"-option: length, height and file turns white (if you change your mind)
     def ucmcbbClicked(self):
         if self.dlg.radioButton_ucmcbb.isChecked():
-            self.dlg.lineEdit_lengthbb.clear()
-            self.dlg.lineEdit_heightbb.clear()
-            self.dlg.lineEdit_file.clear()
-            self.dlg.lineEdit_lengthbb.setStyleSheet("QLineEdit"
-                                "{"
-                                "background-color : white"
-                                "}")
-            self.dlg.lineEdit_heightbb.setStyleSheet("QLineEdit"
-                                "{"
-                                "background-color : white"
-                                "}")
-            self.dlg.lineEdit_file.setStyleSheet("QLineEdit"
-                                "{"
-                                "background-color : white"
-                                "}")
+            self.notUdbb()  # if you change option
+            self.notFile()  # if you change option
 
     # When "User-defined"-option: length turns yellow and is focused
     def udbbClicked(self):
         if self.dlg.radioButton_udbb.isChecked():
-            self.dlg.lineEdit_file.clear()
-            self.dlg.lineEdit_file.setStyleSheet("QLineEdit"
-                                "{"
-                                "background-color : white"
-                                "}")
+            self.notFile()  # if you change option
             self.dlg.lineEdit_lengthbb.setFocus()
             self.dlg.lineEdit_lengthbb.setStyleSheet("QLineEdit"
                                 "{"
                                 "background-color : yellow"
                                 "}")
 
-    # When length entered: length lineedit turns white
+    # When length entered: length turns white
     def lengthbbEdited(self):
         self.dlg.lineEdit_lengthbb.setStyleSheet("QLineEdit"
                             "{"
@@ -290,7 +292,7 @@ class getnib:
                             "}")
         self.dlg.radioButton_udbb.setChecked(True)
 
-    # When length finished entered: height lineedit turns yellow and is focused
+    # When length finished entered: height turns yellow and is focused
     def lengthbbFinished(self):
         self.dlg.lineEdit_heightbb.setFocus()
         self.dlg.lineEdit_heightbb.setStyleSheet("QLineEdit"
@@ -298,7 +300,7 @@ class getnib:
                             "background-color : yellow"
                             "}")
 
-    # When height edited: height lineedit turns white
+    # When height edited: height turns white
     def heightbbEdited(self):
         self.dlg.lineEdit_heightbb.setStyleSheet("QLineEdit"
                             "{"
@@ -308,27 +310,14 @@ class getnib:
     # When "layer"-option:
     def lyrClicked(self):
         if self.dlg.radioButton_lyr.isChecked():
-            self.dlg.lineEdit_lengthbb.clear()
-            self.dlg.lineEdit_heightbb.clear()
-            self.dlg.lineEdit_file.clear()
-            self.dlg.lineEdit_lengthbb.setStyleSheet("QLineEdit"
-                                "{"
-                                "background-color : white"
-                                "}")
-            self.dlg.lineEdit_heightbb.setStyleSheet("QLineEdit"
-                                "{"
-                                "background-color : white"
-                                "}")
-            self.dlg.lineEdit_file.setStyleSheet("QLineEdit"
-                                "{"
-                                "background-color : white"
-                                "}")
+            self.notUdbb()  # if you change option
+            self.notFile()  # if you change option
 
-    # When selected lyr is changed:
+    # When selected lyr is changed
     def lyrActivated(self):
         self.dlg.radioButton_lyr.setChecked(True)
 
-    # When "file"-option: file turns yellow and is focused along with the file select-button
+    # When "file"-option: file turns yellow and is focused
     def fileClicked(self):
         if self.dlg.radioButton_file.isChecked():
             if self.dlg.lineEdit_file.text() == '':
@@ -336,16 +325,7 @@ class getnib:
                                 "{"
                                 "background-color : yellow"
                                 "}")
-            self.dlg.lineEdit_lengthbb.clear()
-            self.dlg.lineEdit_lengthbb.setStyleSheet("QLineEdit"
-                            "{"
-                            "background-color : white"
-                            "}")
-            self.dlg.lineEdit_heightbb.clear()
-            self.dlg.lineEdit_heightbb.setStyleSheet("QLineEdit"
-                            "{"
-                            "background-color : white"
-                            "}")
+            self.notUdbb()  # if you change option
 
     # When file selected: file lineedit turns white
     def fileSelected(self):
@@ -378,18 +358,16 @@ class getnib:
                                 "background-color : yellow"
                                 "}")
 
-    # When start-year entered: start-year lineedit turns white
+    # When start-year entered: start-year turns white
     def startEdited(self):
         self.dlg.lineEdit_startyear.setStyleSheet("QLineEdit"
                             "{"
                             "background-color : white"
                             "}")
         # Due to "All years"-option is set to default:
-        # Turn off "All years" and turn on "Between years" if user just start typing in a start year
-        self.dlg.radioButton_allyears.setChecked(False)  # UnCheck
         self.dlg.radioButton_btwyears.setChecked(True)   # Check
 
-    # When start-year finished entered: end-year lineedit turns yellow and is focused
+    # When start-year finished entered: end-year turns yellow and is focused
     def startFinished(self):
         self.dlg.lineEdit_endyear.setFocus()
         self.dlg.lineEdit_endyear.setStyleSheet("QLineEdit"
@@ -397,7 +375,7 @@ class getnib:
                             "background-color : yellow"
                             "}")
 
-    # When end-year edited: end-year lineedit turns white
+    # When end-year edited: end-year turns white
     def endEdited(self):
         self.dlg.lineEdit_endyear.setStyleSheet("QLineEdit"
                             "{"
@@ -419,7 +397,12 @@ class getnib:
             self.dlg.pushButton_file.clicked.connect(self.select_input_file)
             self.dlg.toolButton_help.clicked.connect(self.show_help)
 
-            self.dlg.radioButton_ucmcbb.toggled.connect(self.ucmcbbClicked)            # When Use current maps canvas is chosen
+            self.dlg.radioButton_ucmcbb.toggled.connect(self.ucmcbbClicked)            # When current map canvas bb is chosen
+
+            self.dlg.radioButton_udbb.toggled.connect(self.udbbClicked)                # When User-defined bb is chosen
+            self.dlg.lineEdit_lengthbb.textEdited.connect(self.lengthbbEdited)         # Whenever length is edited
+            self.dlg.lineEdit_lengthbb.editingFinished.connect(self.lengthbbFinished)  # When you press ‘Enter’ or length loses focus
+            self.dlg.lineEdit_heightbb.textEdited.connect(self.heightbbEdited)         # Whenever height is edited
 
             self.dlg.radioButton_lyr.toggled.connect(self.lyrClicked)                  # When lyr bb is chosen
             self.dlg.comboBox_lyr.activated.connect(self.lyrActivated)                 # Whenever a lyr item is chosen
@@ -427,11 +410,6 @@ class getnib:
             self.dlg.radioButton_file.toggled.connect(self.fileClicked)                # When file bb is chosen
             self.dlg.lineEdit_file.textChanged.connect(self.fileSelected)              # Whenever file is selected
 
-            self.dlg.radioButton_udbb.toggled.connect(self.udbbClicked)                # When User-defined bb is chosen
-            self.dlg.lineEdit_lengthbb.textEdited.connect(self.lengthbbEdited)         # Whenever length is edited
-            self.dlg.lineEdit_lengthbb.editingFinished.connect(self.lengthbbFinished)  # When you press ‘Enter’ or length loses focus
-            self.dlg.lineEdit_heightbb.textEdited.connect(self.heightbbEdited)         # Whenever height is edited
-
             self.dlg.radioButton_allyears.toggled.connect(self.allyearsClicked)        # When All years is chosen
 																					   
             self.dlg.radioButton_btwyears.toggled.connect(self.btwyearsClicked)        # When Between years is chosen
@@ -445,7 +423,7 @@ class getnib:
 
         # As default: Set map canvas checkbox to checked
         """ If this should not be the default, comment # next line """
-        self.dlg.radioButton_ucmcbb.setChecked(True)      # Checked
+        self.dlg.radioButton_ucmcbb.setChecked(True)    # Checked
 
         # Clear the contents of the lineEdit_lengthbb from previous runs
         self.dlg.lineEdit_lengthbb.clear()
@@ -458,7 +436,7 @@ class getnib:
         # Clear the contents of the lineEdit_file (select file) from previous runs
         self.dlg.lineEdit_file.clear()
 
-        self.dlg.radioButton_file.setChecked(False)      # Unchecked
+        self.dlg.radioButton_file.setChecked(False)     # Unchecked
 
         # Fetch the currently loaded layers
         layers = QgsProject.instance().mapLayers()
@@ -500,12 +478,17 @@ class getnib:
         end = self.dlg.lineEdit_endyear
         end.setValidator(QRegExpValidator(QRegExp("19[0-9][0-9]|20[0-"+str(int(d3)-1)+"][0-9]|20["+d3+"][0-"+d4+"]")))
 
-
         # Get projects epsg-code                                                  # e.g.
         crs_proj_str = iface.mapCanvas().mapSettings().destinationCrs().authid()  # EPSG:25832
         crs_proj_int = int(crs_proj_str[5:])                                      # 25832
+        epsg_list = [25832, 25833, 25835]
+        if not crs_proj_int in epsg_list:
+            self.iface.messageBar().pushMessage("Error", "Project must be in UTM 32, 33 or 35", level=Qgis.Critical, duration=3)
+            return  # Return from (end) plugin 
+            
         """ end additional code """
 
+
         # show the dialog
         self.dlg.show()
         # Run the dialog event loop
@@ -522,7 +505,7 @@ class getnib:
             if self.dlg.checkBox_resetNib.isChecked():  # Empty the Nib-prosjekt group
                 reset = True
 
-            # If checked, use current map canvas as bounding box (=extent of)
+            # If checked, use current map canvas as bounding box (= extent of)
             if self.dlg.radioButton_ucmcbb.isChecked():
                 # Get the extent of current map canvas (coordinates in the project's crs)
                 e = iface.mapCanvas().extent()
@@ -542,23 +525,15 @@ class getnib:
                 else:
                     # Length and height (in km) requires projected coordinated. Ensures this by converting the coordinates to LAEA
                     e = iface.mapCanvas().extent().center()
-                    sourceCrs = QgsCoordinateReferenceSystem(crs_proj_str)  # Input project crs
-                    destCrs = QgsCoordinateReferenceSystem('EPSG:3035')     # ETRS89-extended / LAEA Europe
-                    transformContext = QgsProject.instance().transformContext()
-                    xform = QgsCoordinateTransform(sourceCrs, destCrs, transformContext)
-                    # Forward transformation: src -> dest
+                    # Debugging
+                    # self.iface.messageBar().pushMessage("Info", "Center x, y: " + str(e.x()) +", "+ str(e.y())+", "+crs_proj_str, level=Qgis.Info, duration=5)
                     # Computes corner coordinates in LAE regardless input crs
-                    self.iface.messageBar().pushMessage("Info", "Center x, y: " + str(e.x()) +", "+ str(e.y())+", "+crs_proj_str, level=Qgis.Info, duration=5)
-                    cc = xform.transform(QgsPointXY(e.x(),e.y()))
-                    self.iface.messageBar().pushMessage("Info", "Center x, y: " + str(cc.x()) +", "+ str(cc.y()), level=Qgis.Info, duration=3)
-                    xmin = cc.x() - int(l)*1000/2
-                    xmax = cc.x() + int(l)*1000/2
-                    ymin = cc.y() - int(h)*1000/2
-                    ymax = cc.y() + int(h)*1000/2
+                    xmin = e.x() - int(l)*1000/2
+                    xmax = e.x() + int(l)*1000/2
+                    ymin = e.y() - int(h)*1000/2
+                    ymax = e.y() + int(h)*1000/2
                     """ Check length and height of bounding box. Limit is set to 500 km """
                     ok = self.check_bbsize(destCrs, xmin, xmax, ymin, ymax)  # Check if bb is small enough
-                    crs_proj_int = 3035  # Use this as input CRS in the NiB WMS-call regardless if project's CRS
-            else:
                 if self.dlg.radioButton_lyr.isChecked():  # layer-option checked
                     lyr_name = self.dlg.comboBox_lyr.currentText()  # Get the layer name
                     if lyr_name != "":  #  If a layer is present/chosen
@@ -591,7 +566,7 @@ class getnib:
                         return  # Return from (end) plugin
                 # Hverken layer eller fil er valgt
                 else:
-                    self.iface.messageBar().pushMessage("Error", "Ingen extent", level=Qgis.Critical, duration=5)
+                    self.iface.messageBar().pushMessage("Error", "No extent", level=Qgis.Critical, duration=5)
                
                 # Activate (select) the selected layer in the combobox or in the lineEdit
                 iface.setActiveLayer(selectedLayer)
@@ -634,7 +609,6 @@ class getnib:
                 else:  # Selected file or layer and project have the same crs
                     # Check if bb is small enough - input crs and bb coordinates are in layer crs = project crs
                     ok = self.check_bbsize(crs_lyr_str, xmin, xmax, ymin, ymax)
-             
 
             if ok:  # If bb small enough, get the corner coordinates (to be used in url-request)
                 # Set bounding box corner coordinates as geojson (x1,y1;x2,y2;...)
@@ -740,7 +714,7 @@ class getnib:
                             for year in years:
                                 if year in n.split():
                                     if y == year:
-                                        with open(str(cwd)+'\\OF_'+str(year)+'.txt','a',encoding='utf-8') as f:  # a = append to textfile (overwrite if file exists)
+                                        with open(str(cwd)+'\\OF_'+str(year)+'.txt','a',encoding='utf-8') as f:  # a = append to textfile
                                             f.write(str(n)+'\n')   # write the OF-project for the specific year to the textfile
                 else:
                     # Delete file if existing