Click on the words "Help / Contact" at the bottom of paypals pages and use the phone option in the blue band at the top OR very bottom of page dependent on what country you are in. Scroll down past the list of help questions and click on 'Call us' bottom of that page. Log in and get the code. Freephone from a UK landline or UK mobile number.
Advice is voluntarily given. Kudos / Solution appreciated if I helped you.