I have already bought Premium, but my account still looks like Basic. Why?
Sign in to your Keep Secret account.
Go to «Settings».
Choose «Account» → «Account Type».
Scroll down the windows and click «Restore Purchase».
This should lead your Premium subscription to renew. If you try to make a purchase again, the app will no longer allow it. If you face any issues, please contact support dinoteam.supp@gmail.com in the «Feedback» tab.