hacks to get channel outside usa

I live in Brazil but have US based credit card. I also have a VPN for my desktop computer.I will have no problem signing up for a CC account..I also read that they don't actually enforce the regional blocking after you successfully activate your account. However I want to watch on my TV, naturally.My RV is a new LG C3 with latest Web OS. The lone remaining issue is that I cannot install the Criterion app on my TV .It is listed in the Amazon Fire stick app store but when I try to install I get App Not Found message.

Any workaround to get app on TV?

I know I could use desktop and do airplay to the TV but then I don't have convenience of remote for browsing,pausing rewinding etc