Tvheadend

Hello,

I just want to start with saying that i'am pretty new to tvheadend, i do know how to use and configure tvheadend but i'am by no mean any pro user.
i just got the swedish comehems iptv service installed on my apartement. the service is delivered with a iptv box (ARRIS VIP1103 Box). My subscription only allow me to watch 12 free channels
including 2 HD channels. so iam not using any card or CAM or anything similar.

So I managed to get the UDP multicast ips and added them as muxes to tvheadend. On Kodi which iam using to view the streams, only 6 out of the 12 channels are watchable, the rest seems to be encrypted
i dont know why, cause all these channels are fully watchable when i use the box instead. Notice that i do legally have the right to watch these channels so i'am not trying to do anything illegal
i just want to be able to watch all the channels through tvheadend instead of the iptv box.

I would appreciate if i could get any help regarding this

Thanks in advance

/moe