Tvheadend

Hi, thanks in advance.
I have;
enigma2 machine which generates an .m3u containing all of the channels it receives.

I can import that .m3u list to tvh using the Simple IPTV network wizard.

tvh identifies all 580 muxs'.

I can scan those mux and see 8000+ services. (I assume for each channel there are audio tl=eletext and CC etc services)

Of all those services, grouped into their respective channels , only 1 will be auto enabled, the rest "missing pat/esd. see pic

After mapping all services: if i was to play a stream using the built-in web player, tvh for android tv or vlc (downloading the m3u) it always fails. pic 2

however, if i was to download the "play" linked .m3u from the muxs' menu and play it using VLC on my PC it will play. see pic ok

This tells me that the mux .m3u/url is the one direct to my enigma machine and that the stream works fine.

whilst telling me that the mapped .m3u (which is a network translation) does not.

But why? what have i done wrong?