Bar stops working

After working great for about 2 hours, the tool bar stopped working, I cant save the art,exit out of the art in the app, change the colors that I am using, all I can do is use the white, I cant do anything else. I thought maybe the apple pencil had died, so I went to charge it. Still didnt work. Maybe I had to re-sync the pencil? I tried it without the pencil, still didnt work. Re-synced the pencil, didnt work then either. No error popped up on screen, It just stopped working.

LittleRinsTeddyBear about ibis Paint X