How do I fix the PayPal login authentication error? 10 months ago ID: #708494 Listed In : airlines Ambulance Service Charitable Trust us 0212212142 http://web.sites.google.com/view/paypalsigninlogin/ Business Description To fix PayPal login issues, you much check that you have configured the PayFlow settings accordingly. Clearing the browser cookies or switch to another one. Reviews & Ratings Write a Review No Review. Please login / register to add your review. Tags : paypal login