That button contains a link with a secret key, and some other things. What am I supposed to do with it? I want to set the 2FA up to use my authenticator on my phone.
I’m using bitwarden, so I’ll just copy the 2fa installation link, then pasted it into the authenticator key field in bitwarden and done. You’re going to need to have paid bitwarden subscription or self-hosted vaultwarden server in order to use bitwarden as 2FA client though.
Note that your 2FA installation link contains your 2FA secret key, so don’t save it anywhere else but your password manager.
the way 2fa works is that there is a “seed”, the secret key that you mentioned. this is what will be creating the timed codes. in most applications this will be converted to a qr code for ease but you can still import it to your app of choice or use an extension to convert it to a qr code like @wigglingwalrus said
if you are interested here is a good video about it
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