RTMP streaming is a pure flash technology, it can not work under html5.
You have to provide an alternative source for the HTML5 devices.
for IOS, HLS streaming (m3u8 file) or direct http link
for android only direct http link is support.
Note that only the advanced version of our extension support this (alternative fallback mode).
if you can not purchase it then you have to use direct http link instead RTMP.