I have been using Archer C7 for few months. But, recently Hypptv got problem and showed error code 102004 twice since January. Internet connection has no problem. TM technician informed the router was faulty and asked me to send it for repair.

But then I just tried to change IGMP proxy from v3 to v2, and Hypptv is functioning!

I am not sure why, but it worked for me now.