PvZ2 on Bluestacks Not Working: SOLUTION
Ultimate nightmare on Saturday: no matter how many times I tried, PvZ2 wouldn't open on Bluestacks.
I tried every suggestion on the Bluestacks website, clearing cache, etc. No go.
Then made the mistake of taking the advice on the website where, if all else fails, uninstalling and reinstalling the game, and seeing the 'Tell-us-your-age' screen of death. Thinking all had been LOST.
But luckily I had been backing up my Bluestacks progress. I restored Bluestacks to an earlier version, then when PvZ2 opened and asked me to update - the backup was from February of this year - I downloaded the Update on Google Play.
Bob's your uncle! I got my progress, gems, coins, Jade League status back.
So make sure if you're playing on Bluestacks you create a backup. I usually do one every other day. Settings>User Data>Create Backup.