I made a big project ( 600 events) with a 35 layouts and I made something wrong.
The game is on Google Play.
So the "big problem" could be also named as money bug.
So you have in-game money and if you buy something it substracts from the money, all ok here but if you go to the menu and press start and after you return to the menu the money you spend with that ball upgrade are comming back. ( the upgrade + money comes back like before you bought them)
I don't know what i did wrong. I watched everywhere, I'm not so good at webstorage, don't know why, maybe I didn't uderstand it well.
Soo... if anyone could help me with this bug please let me you email belov to send you the project file.
Much Thanks to everyone reads this.