two-factor authentication

Hi everyone! I am having trouble with my Instagram account. Every time I try to log in to the app or website, the code isn't sent to my old phone number, so I'm unable to use my backup codes. I saved my Instagram code in the Google Authenticator app, but it did not work either. This problem is...

when i enable two factor authentication for facebook account. All accounts display the above message. Do you know how to overcome error like this? I would be happy to pay a fee to get this done. Thank you.

Hi, i saw some people have Trusted device on there instagram, how i can do trusted device on my account, is it the same Two Factor Authentication Or it's another thing, thank you guys.