I have an iPad Pro 12.9" (2021) with iOS 15.0, and Infuse 7.2 on it. The iPad is attached to an Apple Magic Keyboard.
According to the shortcuts overlay I should be able to adjust volume with the arrow keys, and jump forward and back as well. However the arrow keys do not work.
All the other shortcuts are functioning well, including the CMD+arrow key combinations. It’s just the pure arrow key shortcuts (up/down for volume, left/right for jumping) that don’t work.
Restarting the iPad did not help.