I left to review another game and when I returned the game was working again. So I played a bit more and encountered the same issue:
Viewing post in The Idle Countdown jam comments
Thank you!
Sadly it was a known bug that I didn't have time to get rid of. I was also wanting to balance it better so the numbers didn't get that high that fast, but didn't quite make it that far.
Hoping to iron out the bugs and finish balancing in an update at some point 😊 I also want to do some buttons animations and audio as well.