I think it may be due to the fact that Paypal recently redesigned its website. I had this same thing happen about 10 days ago when I made a purchase on ebay, using Paypal. I went directly to my Paypal bookmark and signed in with no problem, and signed out of Paypal. I then went back to ebay and paid with Paypal, and the transaction went smoothly.
I renewed my membership here about 5 days ago, and had no problems with Paypal. So i”m thinking that if you haven’t used Paypal since their website redesign, maybe you aren’t recognized right away because of the redesign. Try logging into Paypal thru their webpage like I did and maybe your problem willbe solved.
HTH,
Eddie