Without getting into too much detail, try removing some of your "comment" tags "<!--" which you and I know aren't comment tags at all but where they are placed, in so many words, is signaling to eBay that you are trying to pass some "Spam" through and that is probably causing your troubles.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .