DG KB 1302 Keyboard numeric failure...

I have a Digital Gadgets KB 1302 wireless keyboard for my iPad Mini 2 and the number keys stopped working on three (3) keyboards. While it isn't impossible to believe, I doubt that just the number keys on three separate keyboards fail to function. I have contacted DG about the issue, and am working with their support personnel. I'll post back the findings, and/or, the resolution.