TVheadend plugin no channels

[evil]

for example...Kodi has no problems with tvheadend and NextPVR

[evil]

NextPVR is working now, but i don't know why. But NextPVR is not so my favorite...please help for TVHeadend.

[evil]

Ok now i use a m3u list, i see all the channels but i can't play anything?!

[TheDreadPirate]

What were you providing to Jellyfin before?

Can you share a fresh Jellyfin log? What happens when you try to play a channel?

[evil]

Perhaps it should also be made clear that after the connection with TVHeadend (HTSP) you still have to make an update under LIVE TV!!!! Because then it works. How are you supposed to know that?
I don't understand why something like this is increasingly expected when you're completely new to it!?!