Custom channels not working

Hello! I'm running Channels on an Unraid server. I had custom channels (using docker) for Pluto TV and Samsung. The Samsung channels stopped working so I updated the docker container, along with Pluto. I also added a couple more like Tubi. The containers are running and I can get the guide info, but none of the channels work. I get 503 errors for all of them. Am I missing something simple?