Macros: Alt - Print Screen doesn't seem to work, Print Screen not recognized, Alt- other keys are OK

[Zen-10]

Trying to program an Alt-Print Screen Macro and bind it to a key for a Monsgeek M1 V5 VIA keyboard

For a Macro consisting of: ALT followed by Print Screen

The alt key is recognized but the print screen button is not recognized in the Keyboard tester or in Windows. The alt key will show as being pressed but the Print Screen key that follows is not pressed.

Other Alt-Key combinations, e.g. Alt - D, Alt-S work as they should - the Alt key will show as being pressed then the other key is pressed.