I have bought minecraft pe but a message pops up saying I havent!

Dear Mojang Team
I would like to report to you a huge bag!
I have bought minecraft pe for 2 years now and it was running great.
Then I tryed to update to 1.2.0.7 and a message poped up telling me to check if I had bought it from the google play store.
Can you please help me?
I have spoken to some developers on twitter and it doesnt seem like they can do anything.

Thank you for the great years I had (and will continue to have) in the minecraft community.