marinatkerber hello and sorry about this. I've replied to your email, but I'll add what I wrote here too:
Could you please let me know your device model, android version, and the version of Velocity Lapse that you are using? Then I can look at the logs to see what happened.
To recover your projects you can plug your device into your computer and navigate to:
/storage/emulated/0/Android/com.velocitylapse.velocitylapse/data/.
If you are using external storage (SD card), projects will be saved to /storage/<external_storage_name>/Android/com.velocitylapse.velocitylapse/data/.
You could also try navigating to the folder with a file manager app, but on newer Android versions you won't be able to (I'm not sure what Android version your device is running).