Keyboard and Mouse lack of control

Using a iMac Pro w/ lots of power and Monterey 12.2. Mouse and Keyboard functions do not work. Have not changed either (both are wireless) and they previously worked well with 5.0
Am I missing something?
Interesting - just tried on my iPad Pro using IOS 15.4 - same issues! Neither mouse or keyboard seem to function correctly.
Further - keyboard and mouse functions work as advertised with videos produced and run on other program: e.g. Final Cut Pro; iMovie; On1. Seems to point to FotoMagico 6 as the culprit.