I got a text from the Bills saying to go to the My Offers section of the MyOneBuffalo app and then register for the presale.
When I did that, I got this email:
Congratulations, by redeeming this offer you will receive Early Ticket Access for U2 at New Era Field on September 5th, 2017.
You will receive an email on Friday, June 9th with information on how to purchase your tickets.