A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
Hello Thiago,
Thanks for your question.
Contacting X support is the right course of action as it's an X account. The authenticator app is just a tool that helps manager these credentials. Only the provider can make account changes, which in this instance is X.
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards,
Abiola