The exit game error (using MENU and BACK button) no longer occurs.
If you set the ingame control to keyboard, the keyboard is working. But only if you try to change the name and leave the screen keyboard. Also the dpad is working ingame, Very curious.Especially the last one is strange: After leaving the screen keyboard, the Fire TV remote control does not produce joystick and game controller events anymore, but sends keyboard events!
Just tried ist but did not work for me. It only apends the new name on the existing name.But there's another (clumsy, but easier) way to change the player name: Use the screen keyboard, then blindly erase the existing name using the backspace ("<=") key, then blindly type the new name and leave the screen keyboard.
Apart from these errors the game runs quite well with the gamepad.
For the future, ingame control with dpad and a "Disable" option in: "Setup-Touch Ctrls-Toch Control Type" would be nice. Because you don´t need a touch control on the fire tv stick.