FRP

I had recently bought a lg g4 off ebay with FRP lock I was able to bypass the screen using the pop up when you try to sigh in at locations such as McDonalds. I was also able to root the device. the problem I still have is when I try to use any google service it will prompt me to give email. I tried hard reset and when I go to settings there is no way to reset it. And I was also able to unlock the camera