I am running plex media server on my MacBook Pro and using an Airport Extreme router. I was able to briefly connect to the server on my android phone and watch the limited 1 minute. I have bought a month of plexpass and I am still having issues connecting to my media server. I feel like my computer is blocking incoming traffic.
I am not that computer literate when it comes to setting up advanced network settings. I tried giving my computer a reserved local IP and then forwarding port 34200 from that IP. Not sure if that was even the right thing to do. The only way I was able to get the remote access to work was having Plex automatically specify public port and not use the manual 34200. I also started off by having my laptop wired into my router, but had to unplug it and turn on wifi for anything to work.