Is Synergy IPTV strong from a buffering / content perspective?

The service seems great on paper, but I can't figure out how to load my free trial on my firestick. I wanted to try the m3u format, as opposed to a stbemu setup, so that if I end up needing multiple connections in my house, i can do that well.

The only tutorials / help they have are through discord servers. I can't seem to log on to this discord server. they don't have a website or pdf tutorial for this. seems a little odd, but anyway... if anyone has a review, that would be great. or should i just ditch this service because of this discord thing being the only help offered?