I often hear complaints from my friends who lost connection with Google Authenticator for several reasons, for example, because the device is lost, the application is uninstalled, etc. So when you lose your connection, you have a backup of the barcode to re-scan. That's what should have been applied from the start. We must be wiser and more concerned about managing various data related to our cryptocurrency assets. Make special files or special notes to make it easier for us to manage them.
I often hear complaints from my friends who lost connection with Google Authenticator for several reasons, for example, because the device is lost, the application is uninstalled, etc. So when you lose your connection, you have a backup of the barcode to re-scan.
The same thing applies to store private keys in a safe place and don't forget to back up.