He's on the login screen (PC on the flight to Edinburgh).Also a screenshot of where you are at would help.
I'm guessing something pretty fundamental went wrong; a player.log file would help nail it down.
The save folder should be here:
PC: %USERPROFILE%/AppData/LocalLow/Droid Productions/Love of Magic
Mac:
Saves: ~/Library/Application Support/Droid Productions/Love of Magic
Player.log: ~/Library/Logs/Droid Productions/Love of Magic/Player.log
Linux: $XDG_CONFIG_HOME/unity3d/Droid Productions/Love of Magic
SteamDeck: /home/deck/.config/unity3d/Droid Productions/Love of Magic