Unable to access Instagram account

Hello,

I was strangely logged off of my IG account while using it and have been trying to login without success. Haven't had no issues with my account for 7 years. I've updated my password after the lockout, but the system will not allow me to move forward due to the 2-authenication process using an authenticator (which is no longer in service), nor update the old phone number connected to the account and I'm unable to find any of my back up codes. I was guided to the help center but none of the information there could help me. What is going on and what should I do?

Windows / Chrome 122.0.0.0