Nighthawk XR500 configuration for IPTV

Yes please do, the last information was about me discribing witch ip goes to witch device.
Also my ISP's provide me the VLAN ID TAG 501, Prio 4.
Default for VLAN ID INTERNET 10, PRIO 0.
Witch should have worked.

My ISP's talked about that the
VLAN for internet needs to be untaged but thats impossible due to the XR500 are defaulted as taged in the VLAN tag. im not quite sure what they mean by untag when its already there as default.

However according to me, it shouldnt bee this hard to config an IPTV due to the steps are quite phew and very simple.
The IGMP was something to come up when i talked to my ISP even though they are not technician so they wasn't 100% how to use this and if it was needed for the router.

Rommel on netgear support is the contact man that esculated my case futher, now im not sure but it seems they are replying back to him and me.

Funniest thing was when i config the IPTV, my IPTV are going through and shows on the TV but then the internet shuts down. and my ISP can see that my IPTV is sending out an IP adress but not my internet. So it very clear that the package protocoll isnt working as it should.
And why are the internet shutting down its so weird.

Kind R.
Christian