1Upload your public key
Paste your public key, never the private one, into the account security settings.
2Test before enforcing
Most sites ask you to decrypt a test message before enabling 2FA. Do it, and confirm the code is accepted.
3Check your backup
Make sure your private key backup and passphrase work on a second device or after a restore.
4Mind the expiry date
Extend your key before it expires and update it on the site, or you may be unable to decrypt future challenges.
Lesson summary
Upload the public key, pass the test challenge and confirm your backup before enforcing 2FA.
Looking for the current address? See the WeTheNorth link status.