If Cleared to Land is doing something weird, email me at dwaynecharrington@gmail.com with the device you are using, your iOS or iPadOS version, and what happened before the problem showed up.
The game does not require an account. There is no username or password to recover.
For purchase issues, open the First Class Pass screen and use Restore Purchase first. If that does not bring the pass back, email me and include whether you bought it on iPhone or iPad.
For gameplay issues, a screenshot helps a lot. The most useful report is the airfield name, whether it happened in Daily Challenge or normal play, and what the aircraft was doing when things went wrong.
For privacy questions, Cleared to Land does not need a player account to run. Purchases are handled through the App Store, and the game uses RevenueCat to check whether the optional First Class Pass is active. The privacy policy has the full version.