Adding eTickets to my Wallet takes me to Apple Pay
I recently bought two tickets for a concert. Received the cutomary email with a link to the concert venue site where I could access my eTickets and download them unto my iPhone wallet. But when I click on the Add to your Wallet button, instead of putting the tickets in my wallet, it automatically transfers me to the Apple Pay site, asking me if I want to add a new card. I already have a credit card in my wallet, which I've used frequently to pay purchases with Apple Pay. I've called the ticket office of the venue and explained the problem to them but they told me that it was an issue that I should resolve with Apple. Any clue or idea how to solve this?
iPhone 8 iOS 16.7.10
iPhone 8 Plus, iOS 16