Welcome to Android Central! It may be that you got pushed to the end of the queue if you didn't accept the update within a given time frame. Hopefully it doesn't mean that they're suspending the update for the G--that's what happened with my 2013 N7. I got the notification for 5.0, then it suddenly disappeared. Waited a few more weeks, then 5.0.1 was pushed, presumably because 5.0 was a bit buggy.