I've changed my paypal password and set security when I log in (text code to my phone) but I can seem to stop ebay payments going through automatically.
Not sure what browser you use but i am on firefox and go to the 3 lines very top right of my browser > options or settings > privacy / security > leave the tick by saving logins and passwords but click on exceptions and add paypal to that list.
Advice is voluntary. Kudos / Solution appreciated.
