Tvheadend

Hello.
I just installed 4.1.2076 on my Synology NAS.
I used the wizard to load a m3u playlist from remote http url.
It adds the network correctly (IPTV automated network) and scan for all muxes correctly.
After that, it is unable to find any service.

The m3u playlist work ok on other systems like dvblink.

In the m3u file, every service is in this format:

#EXTINF:-1,Channel 1
http://xxxxxxx:1111/xxxxxx.ts

or

#EXTINF:-1,Channel 2
http://xxxxxxx:1111/xxxxxx.mkv

Where is the problem?

Thank you
Chris