If a session was archived — for example because it was too short (minimum 30 valid data points), contained data corruptions, or failed to upload for any other reason — you can retrieve the archived file from the following locations:
Android: Navigate to your main storage, then open: Android/data/de.sunbits.windsporttracker/files/downloads/WST
You must use the built-in Files app to access this folder — it is the only app with the required permissions. Third-party file managers cannot access this path directly, though better ones like Total Commander will redirect you to the correct app automatically.
iOS: Navigate to your phone storage, then open: WST/archive
Note: If you use the Archive All function (even for a single session), you will be prompted to choose the destination folder yourself.