Plants vs zombies not authorized to play this game

Hi, i cannot even rember how long ago i purchased my version of plants vs zombies, and for some reason after years of being able to be played nornally, this week it has sudenly ceased working and now just constantly gives me a "you are not authorized to play this game" error. I can definitely say i purchased the game, through the usa google play store, and have been playing without issue for years, so can someone please explain to me why i cannot do so anymore. If i need to pm a administrator my google play id i will, but i do not feel comfortable stating it publicly on a forum.