If the custom domain is still set in your Site Settings, Neocities will try to point to it. You should be able to clear the text box and press Update Domain to fix it.
i tried this but no luck unfortunately!
A tag can only be a single word, and can only contain letters and numbers.
Select the tags you would like to remove:
You are going to block this site. This will do the following:
Are you sure you want to do this?