I purchased two tickets on for the Outlaw Music Festival on 05/29/2021. There were no restrictions on attending the Event. On 08/18/2021 I received an Email from the venue stating that proof of COVID-19 vaccination was required or proof that a negative COVID-19 test (No earlier than 72 hours from the event) would be required for entry into the concert. I asked Ticketmaster for a refund. They sent an Email to me stating the refund is on its way and would be applied to the say method of payment that I had used to make the payment. Since I purchased the tickets through EventTicketsCenter; I assume they will receive the refund for the ticket purchase. I have sent 3 emails to EventTicketsCenter and they have not replied. Please refund my money due to breach of contract. These stipulations were not in place when I made my purchase and are now denying me use of the tickets through no fault of my own.