i played today enough to make some 6400 coin with some help of challenges and bought a cheese hat for more coins, but when i restarted, my new second hat was gone and my cash was there with a little less amount about 200-300 coins, now i played again and bought same hat, played a challenge to ensure timing to server to update (if it works this way) now i can see my hat
nevertheless i found a bug, maybe it is worth of reporting

Yeah I get this too - submitted my own report about it, didn't see this one when I looked to see if anyone else had reported it. not sure if it's losing XP as well.

Hey guys, I'm sorry you experienced this bug. However, I think we've fixed something similar to it in the newest build V0.0.139. Thanks for playing, ElBobbo