Would be nice if you can help me out as well. I spent a good amount of time trying to figure out how to 'save' my game progression, until I found this post. I tried entering the same username as before, but nothing works. I quit the game after finishing the level regarding politician scam (I forget the names of the people, something about a photo of Marie being used as evidence).
Viewing post in [ISSUE][MAC] Can't load game?
Based on the game progress you've described, I've created a save file that should put you back where you left off.
Your save file can be downloaded HERE
Also please refer to the guide I've written for updating save files in the game: Guide For Updating Save Files
Let me know if you get stuck on any of the steps in the guide.