I start by replying to your last questions first:
I used Unlock encrypted volume, Unlock hidden volume(I created on a windows machine - the configure menu works fine for me on windows 10), also Lock hidden volume, Lock device(I don’t remember if this wording is correct - I mean the function that locks the key not a specific volume, the function that shows the debug window and about so pretty much everything else other than configure.
I’m using the default window manager in Lubuntu 17. I think it is OpenBox, but I’m not 100% sure. I’ll try a different window manager in a day or so. In the meantime do you have any other suggestions I can try at the same time, or ways to troubleshoot?