This is a support query from users stuck at the login screen.
The page would list common causes: incorrect phone number, spam folder delivery, carrier delays, or temporary SMS outages. It would provide step-by-step fixes, such as requesting a new code after 60 seconds, checking the blocked list, or using the voice call option. It would also explain how to switch to a backup authentication method like Google Authenticator.
By addressing this directly, NG28 reduces support ticket volume and user frustration. The tone is patient and helpful.