Every day for the last few weeks I get a notification on my tablet that has the blue Google "G" and says "Account Action Required". When I tap on it it shows my POP email address and asks for my password.

I have not been entering it since K9, my email app, is doing just fine receiving my gmail and pop email.

Can someone tell me why this annoying and probably unnecessary notification is happening. More importantly - how can I rid myself of it?

TIA