I don’t use any VPNs or extensions. It’s not happening on Safari on the same computer. It’s been happening on Brave for the past week. I’ve ordered many tickets on Brave over the years.
I use Aggressive Ad & Tracking. I tried turning it off and the issue persists.
From an NZ IP; https://gif.fanboy.co.nz/gif/ticketmaster.gif (standard blocking). Also tested Aggressive which showed the same. Could you try using a VPN from a different US location?
Its not an anti-brave, just the anti-bot detection on the site. I could easily trigger it via using a vpn. Using a vpn/securedns/loading the site from a different location or anything in between will trigger it. You should reach out to them.