You'll have to contact Customer Support and have them remove your ebay id from your old Auctiva account, then you should be able to create a new account and get a token.
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 .