Piracy

I have to admit I know just about nothing about vpns and proxy's etc. I have mullvad vpn because I wanted to do the nyt crossword puzzle at work. I tried to also use mullvad at home on my Nvidia shield tv tube to use the MLB app but it often doesn't work. I read somewhere online that I should use SOCK, but after googling I just don't understand. I just want to reliably watch the mariners disappoint me using the MLB app on my Android tv with the free subscription I get from T-Mobile. Please help me piracy, you're my only hope.