How do i set up two-factor authentication (2fa)?

How many devices can I set up per contact?
If I have set-up more than one device, which one do I use to generate my 6-digit passcode?
I have more than one contact login – can I set up 2FA across all my logins using the same device?
What will happen if I have a passphrase already?
What is RFC 6238?
How often will I have to input a 2FA passcode?
I get an error when inputting my 16-digit set up key
I’ve got a message that my account is locked
My 2FA passcode doesn’t work when logging in

The 2FA passcode is time sensitive so it could be a time-related issue. Ensure you are reading the passcode and immediately entering it into Nominet Online Services. Check that the date and time on your device is correct, and that you are using the correct time zone for where you are situated. 

If you have multiple contact logins, you need to make sure the 2FA passcode is the correct one for the contact login you are using.  

What happens if I have lost the device with 2FA installed?

If you have another device associated with your contact login then you should: