I wouldn't use the app on either. Install tivimate on your FS. https://troypoint.com/tivimate/

I use PIA for a VPN. It is very necessary. A lot of cable companies block signal or throttle the shit out of you.

This might be a silly one. But how do I get IPTV ? I have an Xiaomi android TV box and LG smart TV. I need help like a dummies guide to IPTV. Also I’m in Dubai.

Install it on your Firestick and never fail to use a VPN.