I have the problem that I cannot change the type of line I am using to draw. All other things can be changed for example the color of the pen etc. I can see all different types for example point lines or the gras line but I cannot pick them.
Which Archicad version and which computer operating system are you using? There is a known issue with AC26 on macOS Ventura. You can select the livetype by using the arrow keys to move up and down the list of available linetypes.
Lee Hankins ArchiCAD 4.5 - Archicad 27UKI Apple Silicon 27.1.1 macOS Sonoma (14.2)
I have the same issue, using AC26 on macOS Ventura, it's extremely bothersome. Does anyone know when this is going to be fixed? The cursor keys are helpful but not very reliable, it skips line types or just doesn't respond...