2 votes
Accepted

Disabling GreenAddress 2FA ∵ Google Authenticator doesn't generate the correct OTPs for it

The only reason I can think of that would result in the above with a valid OTP seed is invalid OTP settings (but default should work for Google Auth) OR incorrect time on the device OR invalid time (...
1 vote

Which exchanges support U2F authentication?

As you have correctly noticed none of the Bitcoin exchanges have implemented the FIDO standards there is not a large demand for this feature from what I gather. If the standard were to gain mass ...
  • 2,640
1 vote
Accepted

How do I reset my TFA token in Coinbase?

You should have the option to remove / change the 2-factor Authentication under Settings >> Personal Details, though this may have changed. My guess is you'll probably need to contact Coinbase support ...
  • 26

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