I own the domain JanNeukirchen.net and successfully deployed a site using netlify. Since I could not find that site on the list on my account any more I created a new one (https://xenodochial-hodgkin-54bc08.netlify.com/). When I tried to add my domain to that site I got the following error:
Another site is already using this domain
In order to track down the cause of the problem I recreated an old account that I deleted before to check if that was blocking the domain but I could not find the site there neither.
Is there any way that I can delete or recover my old site that is blocking my domain?