As you have not added your country to your profile (so we can see when we hover over your username) or said in your post which country you are in then sadly can't advise. Paypal varies a great deal country to country so you need to tell us where you are on this worldwide community forum.
However you normally verify by linking and confirming either a bank account or card to your paypal account, country dependent.
Advice is voluntary. Kudos / Solution appreciated.
