I had an unrecognized payment for a rental as well.
Transaction showed multiple confirms long before the timeout for payment but it kept saying "Rented - Waiting payment..."
Raised a ticket (IRC link is down), and got refunded fairly quickly so at least response to the issue was swift.
Looks like the new multi-coin payment system broke all payments (mine were in BTC) so I guess no new rentals until this is fixed.
Just BTC is broken. (It's not exactly broken per say. Just fairly slow. Working on a workaround now)
Ahmed