Centriq Gap nbox is full, or it's getting too much mail right now - whaaaat?

Centriq, after getting your gap claims email address on your web page and sending my claims, I got a return email reading : Recipient inbox full Your message couldn't be delivered to ***. Their inbox is full, or it's getting too much mail right now. I contacted you office and got the same address and no guesses I got the same reply; Recipient inbox full Your message couldn't be delivered to ***. Their inbox is full, or it's getting too much mail right now. How is it possible to get a GAP claim submitted? Or am I paying a benefit with no benefit?