Connecting to Plex Server without Internet

I recently moved and I now do not have internet. While I am trying to figure out how to get internet I have my Plex media server (running on Linux) hooked up to my wireless router figuring that I would still watch movies on my home network while I wait. However, when I try to connect to my server while on my home network either the plex apps on (Roku, or Ipad) or even just trying to connect using my local IP address it says that Plex is unavailable. Any recommendations would be very helpful.

Thank you!