so basically i just want to add my phone number to my account, ive having a issue to put my phone number, and it said its not valid phone number. any ideas could fix?
This may be a dumb question, but I'm at a loss. I don't want to install another app if I can help it (authy..). If I don't install or log into Authy, will SMS be my default authenticator? If not, how can I enable SMS authentication?