Sign in your Paypal account manually (www.Paypal.com) and, as always, check to be sure that you end up at the 'https:' secure sign in screen. Check to see if there are any payments pending and claim them from within. Paypal does ugly, stupid rip-off transparent stuff like this all the time - in the hopes that you won't 'claim' your money quickly, they can sit on it and make money using it -. They're ultimatey hoping that you never notice at which point, they can just keep it as 'unclaimed and found.

Danny