Alright, I'll put in a failsafe in the next update.
In the mean time:
1. Could you go into your ...LocalLow\Delusria\Salvor DEEP and open PlayerData in notepad.
2. Scroll to the right until you find "visitedLevels" and add a: , 1 like this
3. This SHOULD give you the level the next time you start it. If it doesn't then let me know. (I assume you still keep your loot, equipment , hscenes etc between levels and restarts of the game?)
4. If it does give you the level then see if you can complete the other 'new' levels and discover the rest of the levels from there.