Email mburaksayici@gmail.com or call +90 531 919 54 55. Include the Apple ID email you used to buy credits, and what you expected to happen.

Credits are consumable. One credit generates one room design. Restore Purchases is on the credit screen and in the account tab. To delete your account and the photos stored for it, open the account tab and choose delete account. Rooms, photos, and credits are deleted from the server. This cannot be undone.