Just had a problem but it was my fault. Sold something on eBay. After 5 days asked the buyer about payment. Gave me a screen shot of payment proof. Did not show in my PP account.
Contacted ebay. They told me the email address the payment went to. It was mine but old and now dead. I listed on eBay with the offline software and it had the dead address.
Contacted PP and explained the situation. Rep added the address to my account and while I was on the page the money showed up.
Bad thing was buyer posted negative feedback before I found the problem. Has since retracted it and I am again 100%.