I have a Samsung Tab3 running Firefox for Android 27. When attempting to view html5 content (TV on demand) I always get the message "this player is not enabled for html5 delivery", and no video. I am unsure if related, but I have installed the latest archived flash player for android, no difference. I have also tried many other browsers that support html5, all give the same message. My old Samsung tablet 10.1 does however play html5 but only using firefox which is why I am persisting with this browser for a solution. I am wondering if the problem may be external to the browser, but I have no idea where to start checking. If I request the desktop site I get told to upgrade the flash player which won't upgrage because it says it is not supported by my device. I am wishing to solve the html5 problem at present.