Plutonium

I don't believe I have ever downloaded one before. Do you know any off the top of your head that I might recognize?

I have been away from Plutonium for some time, and decided to come back. Upon logging in with the correct credentials, I am greeted with a 2FA mobile authenticator lock. I checked my Authenticator application, and I do not have plutonium as one of them at the moment. I believe a hacker got into my account and set it up so I cannot access it. I would like to reclaim my account if able.