Nohost for a new IPv6 zone

I set up a new zone a few days ago and configured ddclient to update that zone exactly the same as on another system that’s working, but every time it tries to update it gets:

Jan 30 21:51:24 anker ddclient[584463]: FAILED: updating nohost: The hostname specified does not exist in the database

usev6=if, if=br0

Last night I added the IP to my zone manually on the website hoping that would kickstart things, but 12 hours later it’s still not updating successfully.