Yes I know it now, you can ceck my last comments. Here, my misunderstanding is because the service just mentioned G2FA only, so i think if it only works for google 2FA only.
Yeah, it's a common misconception that "Google Authenticator" is a "Google Only" service... you're not the first (and won't be the last) person to get confused by that. The sites that have implemented the 2FA service are partly to blame by calling it "Google 2FA" etc...
And Google really should implement a "proper" (encrypted) backup solution for Google Authenticator. Relying on users to safely store the individual "secrets" themselves is messy and prone to error. Authy, Aegis and Authenticator (Plus) (and others) have all been able to come up with solutions, I'm not sure why Google can't?
