I also had the same problem, contacted adobe support via chat didn’t solve the problem. What I did to fix it was try to turn off Full Keyboard access, go to your Ipad Setting-Accessibility-Full Keyboard Access, turn that setting off, all the keyboard shortcuts finally work.
I also had the same problem, contacted adobe support via chat didn’t solve the problem. What I did to fix it was try to turn off Full Keyboard access, go to your Ipad Setting-Accessibility-Full Keyboard Access, turn that setting off, all the keyboard shortcuts finally work.