Hi Hazel,
If you can add some identifying information to the website (either in a comment or soforth), that will prove you own the access to that site.
I can then delete the entries, and you can re-submit the correct associations as you see fit.
I will guide, however, that I’m unsure if you can do a sub-domain as you specified above; you should try to test that before we do any deleting to make sure it works as you would expect.
Thanks,
Ryan