Finally got it working fairly well. Had to do a full reset and then manually search for the Plex channel add on to make it work since it was not showing up in the channel addons selections screen. (Common issue according to the few forums I found on Roku related problems.)
It does what it supposed to but I already hate the messy clunky interfaces system for accessing the video files. I wish there was a way to switch it to a simple labeled folders and file layout rather than the stupid space consuming, and too often totally inaccurate, DVD cover photo type setup it has now.
The remote is stupid over simplified. It has 18 buttons of which 8 do absolutely nothing for me and I would love if they could at least be reprogrammed to serve other actual useful to me functions given how the limited number of others are so clunky to get anywhere with.
It has dedicated Netflix, Hulu, Sling, and Showtime direct access buttons that are worthless being I will not pay to subscription fees to use theri services plus there are a pair of 'A' and 'B' buttons that do nothing and the << and >> don't give me any workable backwards or forwards shuffling ability beyond jumping though minutes or more of the video at a time if they will allow me to shuffle at all.
C+ toy in my book. Impressive tech that's way too hobbled by retarded oversimplified user interface issues for my taste. Glad I didn't pay full price for mine.