GEN 1 Modification Restitution

I had my 2012 Jetta TDI modified on 08/14/2017, I received notification from JPMorgan on 08/15/2017 and payment of $5100.00 received electronically today, 08/17/2017.

NOTE: The notification received on 08/15/2017, by JPMorgan alerted me that if I didn't accept the payment by 09/14/2017, the payment would be cancelled.

i.e., better be paying attention to our email after the fix. I wonder if they snail mail the notification if someone doesn't respond by a certain day?