For 1, does that mean in order to actually use red rush, you have to win a bunch of jackpots and invest them in coin capacity?
Oh no, I am so sorry! :/ someone else mentioned as well their game didn't save which is odd since I have it on auto save every 30 seconds. The game also should save when you transition between coin pushers or when you exit to main menu from game scene. I will work on adding a change to add an export and import for save files since I think it's a web build issue. I will also add another save button on settings.
Edit: I think I found the issue with save file, so will try to push a change soon!
Edit 2: save issue is fixed in latest version