There is currently no way to make the Subscribed Channels settings work correctly. You can take the time to set up Favorites, but until Verizon acts to correct the situation, Subscribed Channels both in the Guide and Genres & Filters will not work as expected.
You can go here to vote for a fix on the Idea Exchange.
Btw I like that they classify me as a "newbie". Sad classification --- I'm guessing they wanted me on these forums more complaining to increase my status. Will it provided me better customer service or enroll me in a secret rewards program?