I know this is probably an obvious question, and you've probably been asked this before but do your saves carry over when the game gets updated
Viewing post in Third Crisis (Free Version) comments
https://anduogames.wordpress.com/2018/02/09/guide-to-save-files-in-third-crisis/
We should put this link in the game, due to how often it's asked, haha.
Hope this solves your problem :)