Tvheadend

I'm currently running TVH 4.0.9 as a Docker on an UnRaid box. I originally purchased a HDHomeRun Connect (OTA only) and was able to successfully get everything working. I decided to not cut the cord, went out and purchased a HDHomeRun Prime (CableCard) instead. Now I'm having some issues.

My cable provider, Brighthouse (in the USA), provided me a CableCard + a tuning adapter to use with the HDHomeRun Prime. Everything is working, but of course, I want to use TVH. I am having the most difficult time getting this to work!

TVH recognizes the HDHP as a DVB-C. I'm in the USA, so I assume we use ATSC. I switched the TV Adapter to ATSC, setup the Network. When I select United States: us-Cable-Standard-center-frequencies-QAM256, the muxes aren't populated. If I select the OTA muxes, they do populate for some reason.

So, I manually entered a few muxes by frequency. They are scanned and found! But, the channels don't play. The log say that they timeout when waiting for packets.

Has anyone in the USA been successful setting up a similar configuration? I would love to know where I'm going wrong.

Best