F1TV blocked the use of VPN’s to access the service earlier this year. Most annoying. If you purchase in a separate country and try to access without a VPN you’ll probably get kicked off too.
Blocking VPNs is simply a game of whack-a-mole. I’ve been using VPNs for years to access geo-restricted content, and when the content provider has blocked a VPN, I’ve just raised a support ticket with the VPN provider and they tweak something* behind the scenes, the problem is fixed and I can watch the content again.
Granted, sometimes it might take a couple of days before the fix is put in place, so it’s not gonna work for “live” or time-critical events but the last time I watched F1 live was Abu Dhabi in 2021…
* Probably assign a different IP address