[Abba2]

There is nothing in the log that shows what is wrong.
By IPTV Recorder I mean the Kodi Video addon not the button in the Kodi TV Guide Program dialog.
Kodi \ Videos \ Addons \ IPTV Recorder \ Channel Groups \ All Channels \ Rai 1 HD \ Speciale TG1 \ Record Once 

It's in the video.. 

Half of your channels don't have program information so I can't tell if that is the problem with the ones you tried.
Try RAI 1 HD but not FHD.

You can turn on
Settings \ Show Now/Next in All Channels / Full EPG
to see which channels have program information.

There might also be a problem with the locale settings.
Someone has been helping with that on github and we haven't found a generic fix for all devices.
If you find a channel with program information, try setting Kodi to English US and see if it can match the program from the epg grid to the IPTV Recorder program.

Tried all channels (with EPG and without EPG), but nothing [emoji30]

From guide and from the plugin, but nothing [emoji30]