Referring to one of the issues in the top comments by Zane XIII: "This game does not explain the prestige system very well: the upgrades you purchase in the Prestige tab deduct from your current EXP, but if you purchase an upgrade and then reset, you will get that EXP back (and the upgrade will be available to buy again). This is significant because if you purchase something that drops you below the threshold for a certain prestige tier, it drops you down, even if your EXP "On Reset" is still in that range. So if you're at 10.5k exp, and you spend 1k of it on an upgrade, you drop from Silver II to Silver I, but you can reset back to 10.5k anytime. "
You said you fixed the issue and I'm still experiencing the same issue. I had 1000 experience and prestiged as a Bronze Master, used some of my experience on some prestige upgrades and got de-ranked to a Bronze II...
I said I fixed the issue where he can reset back to 10.5k exp to re-gain his lost experience. But the loss of a prestige-rank is not a bug, it's normal, if you got 1k exp and you're Bronze Master but you buy an upgrade which cost 100 exp, you will get a Bronze III.
It's normal, that's not a bug! ;)
I found a glitch in the survival mode. If you pause at the beginning of a wave, unpause then kill the first few monsters, then it automatically goes to the next wave...
 "Blackmarket"){kind=icon}
 "Mushroom Madness 3"){kind=icon}
 "Doodle Devil"){kind=icon}
 "Feed the King"){kind=icon}
I said I fixed the issue where he can reset back to 10.5k exp to re-gain his lost experience. But the loss of a prestige-rank is not a bug, it's normal, if you got 1k exp and you're Bronze Master but you buy an upgrade which cost 100 exp, you will get a Bronze III. It's normal, that's not a bug! ;)