Pay Per View repeats request for payment

I have Pay Per View set up to sell some books. It's worked flawlessly until recently when I heard from a customer that it wasn't allowing him to confirm his payment. It simply asks for payment again.

In case it's related, I'm also noticing that Chat and Ultimate Facebook won't update now. I get this - "Download failed. Failed to write request to temporary file."

Support access is activated in case it helps.