Pass disabled apple wallet

I’d try to restart your phone to see if that changes anything with your ability to add the Ticketmaster tickets. If you have multiple ways to add the tickets from Ticketmaster, I’d try the different ways (such as from their website, their app, an email, etc.). Apple has a support article about adding passes: Add and use passes in Wallet on iPhone - Apple Support

I also found a support article from Ticketmaster that might help: https://help.ticketmaster.com/hc/en-us/articles/14296188194449-My-ticket-isn-t-working-in-my-Apple-Wallet-What-should-I-do-

If you’re still having issues, I’d personally reach out to Ticketmaster to see if they can provide any other guidance