I had the same problem making a payment yesterday. after changing my password it eventually worked on the 6th attempt. I tried making another payment today and had the same problem. I can log into paypal.com using 2 step authentication fine but get an error after the 2 step authentication when trying to make a payment. For info, this is the web address I'm redirected to before seeing the error: https://www.paypal.com/webapps/xoonboarding?acRedirect=2fa&country.x=US&ctngcyReturn=true&exp=guest&failedBecause=service_error&flow=1-P&locale.x=en_US&token=EC-1XL35961PA299412C&ulMethod=email&ulReturn=true&useraction=commit#/checkout/end I hope this helps someone work out what the problem is. Cheers.
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