To get unbanned on Roblox, players can wait it out or send an appeal to reverse the ban. If you have done nothing wrong and were wrongly banned due to a bug or error, you can submit a ticket to Roblox ...

By submitting a ticket to Roblox support, you only need to wait a few moments for the team to manually fix the problem in your account. To do this, Log in to your Roblox account.