I have two email addresses. I use one for my blog at WordPress. I logged out of wordpress and tried to leave a comment on someone's WordPress blog using my other email address. I got an error saying that the email address I tried to use is associated with a wordpress account. I don't know what account that is, so I tried to log in to wordpress with that email address , and it says there is no user registered with that email address. So, I can't use that email to comment, but I also can't log into wordpress to change it.
I think it may have been associated with a blog that I have since deleted, but apparently, it isn't right now. How can I fix it so that I can use to comment on some WordPress blogs?