Notice step 2 of the instructions only indicates holding #6 for >5 seconds which will put the OnlyKey in config mode.
This is only 1/2 of the step needed to enter config mode, and is missing the OnlyKey DUO instructions (maybe DUO doesn’t restore? I haven’t researched it)
The “Set Backup Passphrase” has the full instructions, including both DUO (a minor point) and the fact that you have to re-enter your password to enter config mode.
(will try to post the backup passphrase screenshot as a reply, I’m rate-limited as a new member)
Holding the 6 >5 seconds but not unlocking the key gives no indication of error, including all the way through the restore operation.
If I didn’t keep poking around (and thought “maybe my backup key isn’t set?”) I would have never known I needed to further unlock the key to restore from backup.
Why would someone not know they needed to unlock the key? Because if you’re looking at the “Restore” screen you’ve already unlocked your key.