I registered a WordPress account for the purpose of being able to post a comment on a particular WordPress blog. However, when I attempt to go to the comment section of a post there and log in, I receive a message reading, "Error: Wrong username." When I attempt to use the "Lost your password?" tool, it returns, "Sorry, that user does not seem to exist in our database. Perhaps you have the wrong username or e-mail address?"
I can login to wordpress.org without any problem. Is there some restriction here? If so it seems odd that it's returning a username error and not giving me useful information as to permissions or anything like that.