Email the same address you sent your request too,
That's what I did when ours was late,
I attached a copy of the receipt proving we paid and explained that it had been over the 30 days.
They emailed me back the same day and notified me that they had sent my notes on a CD via regular mail instead of to my email and that it would take 1-2 weeks longer to arrive.
I got them in the mail around the 45 day mark.