Plex no longer able to find server

My plex was working fine. I had a plex pass (which I canceled since it stopped working) and all was well in my world. Now when I try to launch plex it can’t find the server. I’ve tried everything on the help page and I’ve tried the forums but nothing helps. Is there anyone out there that can help? Why is there no customer service on plex? If only I could call someone. Or, even better, someone who can remotely link to my computer and help me set it up. What can I do now?

Have you gone through this support page?
https://support.plex.tv/hc/en-us/articles/204604227-Why-can-t-the-Plex-app-find-or-connect-to-my-Plex-Media-Server-

@lovessifi said:
My plex was working fine. I had a plex pass (which I canceled since it stopped working) and all was well in my world. Now when I try to launch plex it can’t find the server. I’ve tried everything on the help page and I’ve tried the forums but nothing helps. Is there anyone out there that can help? Why is there no customer service on plex? If only I could call someone. Or, even better, someone who can remotely link to my computer and help me set it up. What can I do now?

Plex does not provide customer service.
The help is via this forum.

Please describe to us the issue and the particular of your system.

I have had plex for several years now and it was working fine up to a couple monthe ago. I have windows 10, am using roku 4, and I have my movies on an external hard drive connected to my computer. I started noticing a movie i was watching would freeze and act like it is reloading or buffering but it would never restart. I would hit the back arrow on the roku remote, it would ask me if I wanted to restart or pick up where I left off. I would chose where I left off and hit the Ok button. Movie would start where I left off. When this problem began, it would do it a couple times during a movie. Now it repeats this sequence about every 10 min, and it did get progressively worse. Thought it was my external hard drives that had all the movies so I bought a new HD and transfered all movies off of three drives to the new one. No change. If I watch a movie on my computer through plex, I have no issue. Also, if I go to plex through roku and watch a movie in one of my friends library, no issue. Its only when I am watching a movie in my own library through plex that I have the issue. Also, if I watch netflix, or amazon video through roku, there is no issue. I hope all of this is making sense to someone out there.