Google Play Log in problem

Hello. For some strange reason I can’t Log in (Anymore). All worked fine when I added LOG IN button. Maybe a day after it wont log me anymore. I was Log in with different accounts sine I can remember which I account I was logged in before. So I’m thinking Google Play must of locked me out using those accounts. What is strange though is that I’m using another App with the same set up but with the same Leaderboard name and info and in it works fine. I did how even kept logging in and out cause of testing so I uploaded whole bunch of APK. Would that have something to do with. Would any body know why my app is ban from logging in?? Thank’s a 2 million.