Your account's two-factor authentication is made by a code generated by an app developed by thirds.
there are many options, each app is developed by a different company. For instance: the app Authy is owned by the company Authy Inc., nonetheless, the app Google Authenticator is owned by Google.
Our access to the functionalities of the app is restricted, any other information is responsibility of the developers.
If you have any doubt related to the usage of these apps, recover of account or even operational problems, look for the app's support responsible.