I am getting unauthorized for the Big 10 Network. However, I am able to access it with my Hulu credentials in my web browser.
I’m having the same issue and I have two service providers, YouTube TV and Verizon FiOS, for TVE. It must be a Big Ten issue.
Have you tried to go into the TVE source in the admin interface, and look at the list of channels? Find the channel having issues. Any errors shown there? Try rescanning the individual channel and see what happens.
Big10 is now working for me through YTTV.
Fixed in next pre-release build.