Same here. I've had nothing but problems with my GA503QR kyboard. The "e" ky only registers if you type the  e fast enough after another character. An OS reinstall fixes it temporarily, but it Eventually starts happening again.

I don't have a solution for you, but I wanted to chime in with support. I have the same issue, on the same model. It seems to be software related because the keys sometimes work, and sometimes don't. Many times it seems to bean issue after sleep. If ...