Why can’t I login to Apple TV on my amazon 4K firestick
Why can’t I login to Apple TV on my amazon 4K firestick keeps coming up error
You probably need to enable 2 Factor Authentication on your Apple ID and create an app specific password to use. If your account won’t allow 2 Factor Authentication, try 2 Step Verification.
Apple ID -Two-factor authentication
Two Factor Authentification availability.
2 Factor Authentication - How to generate a recovery key
Apple ID - Using app-specific passwords.