Hello! Thank you for letting me know about this; I believe the issue you're having is indeed to do with the same keyboard layout limitation.
When I switched my layout to French (AZERTY), the keys in MasterPlan still work using the keyboard's original layout, however I, too, had the same issues that you were running into.
I believe the core problem is still with the keyboard layout, and will have to see what I can do to resolve this in the short term.