I'm verified and confirmed with PayPal using only a PO Box. All you need to do is use a PO Box for your mailing address with your bank, which PayPal will then confirm. Some banks will also require your physical address for their records.
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 .