For any mobile frogs who can't see the BTTV and FFZ emotes on the regular Twitch app, there's an app on the Google Play store that integrates the extra channel emotes. Hopefully
FIX: Twitch emotes not showing
Three New Emotes for My Twitch Channel! – In Third Person
How to Add Emotes in Twitch
Global Twitch Emotes extension - Opera add-ons
Unable to see or use the bttv emote icon - BetterTTV - NightDev Community Forums
Where To Get The Best Twitch Emotes: 8+ Sources - Design Hub
How to enable BTTV emotes on your channel (old) - YouTube
7.2.0] Emote Menu not working properly · Issue #2901 · night/betterttv · GitHub