On the website, choose "Live TV' on the menu.

Choose your TV provider's logo, or tap "View All Providers" to search by the provider name. 

Sign in on the TV provider's login page.

The TV provider account must have the channel to unlock all content. You will not be able to sign in if you cannot find your provider in the list, do not have the channel, or have an internet-only or cellular-only account. You can still watch the unlocked episodes and video clips without signing in, but you will not be able to watch Live TV.

If you have the channel but see an error message that you do not have access to it, clear the browser cache, then sign in while connected to cellular data, if possible. You may return the device to Wi-Fi once correctly signed in.