You may want to try to log back into Game Center to recover your bakery.
To log back into Game Center, please follow these instructions on your device:
1. Device Settings (little silver cog icon on your device)
2. scroll all the way down to Game Center
3. tap Game Center and login where it says Apple ID.
4. Restart Bakery Story 2.
If it doesnt work, please send an email to support@storm8.com for an agent to assist you further.
(Moved and merged to Bakery Story 2 forum)