Oh that's rough, first time I've seen a problem like this on this update. Stuck on level 4 by it not spawning on the map? I'll make a note of this.
I might have an idea as to what the problem is, what is your monitor size and what window size do you have the game at?
In the meantime you can go to C:\Users\Your User Name\AppData\LocalLow\Delusria\Salvor DEEP
Then find Playerdata.json and look for "visitedLevels" and type the number after whichever one you've discovered.