Why can't I set up Apple TV+ on my TV even after confirming my payment method?

• The TV app on the Apple TV box should work much like the TV app on iPhone, including access to the Apple TV+ streaming service.
• The Apple TV app or Apple TV+ app on select smart TVs should offer Apple TV+ services after signing in with an Apple Account to which the Apple TV+ service is linked.
• Web browsers on smart TVs may not function for access to tv.apple.com; those may lack some functionality that computer browsers do offer. For web access to Apple TV+, please do so on a computer, tablet or smart phone, preferably through browsers like Chrome or Firefox. Watch in a web browser - Apple Support

For what model TV with what year of manufacture is this intended?