Need old account deleted to allow DNS

I own When I try to add custom domain to my site : jolly-tanuki-f613f3 I get an error saying another site is already using this domain. I Think its because I created a holding page for the site on a different Netlify account and used the domain name there. I cant remember the login details for that account. Please Please will someone help me to delete that other netlify account/site. I think it is this one:
I baught on goDaddy.

many thanks in advance

Hi, @Joshua_Bedford. As you mentioned, this is happening because the custom domain you’re trying to use already exists on Netlify under a different account.

If you have some idea of who might be using the domain (maybe a previous collaborator or an agency you’ve worked with in the past?), the quickest way to get this resolved is for you to contact that person directly and ask them to remove the domain from their account here: > “Options” dropdown > “Remove domain”

If you’re not sure, please verify domain ownership and let us know by responding here when that’s done. If the verification is successful we can remove the domain from the other account so you can use it on yours.