Apple tv+ with older mac
Following up on the question posed in thread 250889627 (Apple tv+ with older mac - Apple Community), it now no longer seems possible to access AppleTV via https://tv.apple.com/. When I click on the "sign in" button at the top right of my browser window, there is no reaction prompting me to sign in to my AppleID. Is this due to my El Capitan MacOS, or a missing feature/extension in Safari 11.1.2, or...?
Thanks for letting me know if/how I can keep using my old (2007) iMac as a TV--frankly, it seems ridiculous that I can't even use it to stream AppleTV.
iMac