It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

On exiting the game, GOG galaxy tries to sync, but fails saying the user data files on the computer exceed GOG Galaxy Cloud storage quota. But I only have a single save file, and that file is tiny, so not quite sure what the problem is. Checked other games, and their saves sync fine.
Having this problem too, backed up the save and deleted it and the game goes back to before the notice of being able to enter the bank