Pieruskwurje

I've never used deltatouch before myself, but could it be expecting you to use a gamepad? The only input key you'd need is whatever the "use" equivalent is to get through cinematics (the same button you'd use to open doors, use buttons, etc). If it's the main menu you're stuck on I'm really not sure. I don't even have an android device to test on myself unfortunately.

All I know is there's no special input keys that should be required beyond what you'd use for a normal GZDoom mod.