App and all TestFlight builds removed without any explanation – no response from support

Hello,

I'm hoping someone from Apple or the community can help me understand what happened to my app.

My app LocSim (open source, developer tool for location simulation) was distributed via TestFlight for several weeks.

• 6 builds in total
• Tested by internal testers and more than 1,400 external testers
• External builds passed Beta App Review

1. Yesterday I submitted the app to App Store Review for the first time, mainly to find out what would still be needed for a release.
2. This morning the submission was rejected.
3. Shortly after, the entire app was removed across App Store Connect. All existing TestFlight builds expired, and every new build I upload expires immediately.

I have received no explanation anywhere:

• No message in the Resolution Center
• No email
• No rejection notes citing a guideline

I submitted a support request, but have not received a response yet.

• Which guideline(s) the app violates
• Whether this affects only the app or my developer account as well
• What I need to change to make the app compliant again

This is my first app. Nearly 1,500 people are actively testing it, so I'd really like to understand the issue and fix it properly instead of guessing. I'm fully willing to adjust or remove any functionality that doesn't comply with the guidelines.

Any guidance or pointers would be greatly appreciated.

Thank you