Complex problem with the domain!!!

I created a new website at word press. I mapped my domain from a previous host to word press to match the old domain with the new web. The domain was transferred with no problems. After I was done with the new website I’ve seen that the domain that I mapped is associated with another blog that did not created, but it was existing on my word press account. I was trying to move somehow my domain musikforyou.com to my first blog on which I was working with no results. Finally I deleted that blog ( the one that i did not have any idea that was existing) and since that I can not find my domain. Whenever I am trying to map the domain musikforyou.com again it is showing me that “The domain name you entered is already mapped to a WordPress.com blog.” but I do not have it on my account. It is also not existing on my previous host. I do not know what to do anymore in that case and will be greatly appreciate of any help. Thank you

Best

Milo

https://ww.wp.xz.cn/plugins/wordpress-mu-domain-mapping/