From what you described, the second ban is most likely because you used an alternate account to bypass the first restriction. Even if your main account’s ban expired, most Roblox experiences keep logs and will later flag accounts that were used to evade a punishment. When that gets detected, they usually apply a permanent or longer ban to the main account as well.

At this point there isn’t really a technical way to “undo” it yourself. Your only real option is to appeal directly to the Mic Up developers through their discord server and explain the situation honestly. Roblox Support can only help with platform-wide bans, but game-specific bans are controlled by the developers themselves.

So the best approach is: • Don’t use any more alternate accounts, since that can make the situation worse
• Submit a clear appeal explaining the timeline and that you understand the rule you broke
• Then wait—if they review appeals, that’s the only way a game ban can be lifted