as of jan 26 2025, content viewing will only work on windows+edge and osx/ios+safari. the purpose of this is to disable widevine in favour of playready/fairplay. this was an unfortunate decision that negatively effected linux users as well as anyone on windows/mac using a browser that wasn't edge or safari. the decision was also quite foolish considering playready had already been cracked, so people could continue ripping their content regardless!
despite this change it's still possible to watch beyond live streams on linux (or mac/windows) with any browser just by using a couple of extensions.
vinelessUserAgent-Switcher and set your user agent to the latest windows+edge string available