cant make an aim lab account

[Pork Boi]

I have tried so many things to make an account, but every time it says the username is invalid, i have used a few completly different usernames to try fix it but cant, please help

[Kermit]

Hey Pork - Are you registering an account?

To register an account, click the "Register" button on the main screen and create your account through there, you can then log in with your newly registered account.

You can also skip making an account by clicking the "Play offline" button, this will allow you to access all that Aim Lab has to offer without needing to create an account.