I can no longer AirPlay from specific website on my iPhone after iOS 18.1.1 update

Since updating my iPhone to 18.1.1 I can no longer airplay from a website I use to stream (not an app) it used to work until this. I’ve tried everything: checked Wi-Fi connections, rebooting/restarting, all devices have been updated (software), unplugging all devices and waiting ten minutes, please help

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