Problem:
Was about to program a 2021 GMC Sierra smart key on TopdonUltraDiag but the scanner requires a password from Authy app….when i go to App Store Authy app wants to charge me $49 a year. I wasn’t expecting this when I bought this scanner?
Here is the clue.
To clarify what is going on, the screen you are being presented with is where you enter your NASTF VSC and the authentication code that goes along with it. Authy was the old app they used for 2FA, they now have their own app to do this. Just search the App Store for NASTF on your phone and it will come up, but you still have to become a VSP through NASTF, which requires insurance, a fee, and filling out the application. The Authy or NASTF apps will do you no good unless you have an account. Visit NASTF.org to see all the requirements and how to proceed.
Read also:
Topdon T-ninja Pro/Ultradiag Update NASTF Verification Feature