If I delete and reinstall the Koofr iOS app, will photos and videos that were uploaded using Auto Upload be uploaded again?
No. Koofr's algorithms are designed to only upload photos and videos that are not already present in your chosen backup folder. When you reinstall the app and re-enable Auto Camera Upload, it will check what's already in your Koofr account and skip any files that have already been backed up.
Note for users with Koofr mobile app version 4.0.5 or later and iOS 26.4 or later: The Koofr iOS app 4.0.5 and later has a completely new auto upload system. The app will recognise previously uploaded photos and videos as long as they are still located in the same Media folder (for example My iOS Media) where they were originally uploaded. However, if those files were moved to another folder or deleted after being uploaded, the Koofr app cannot detect them as already uploaded and will upload them again.