Media not showing

Classic issues to check are:

  1. permissions → is the local plex account able to see the files in the folder linked to your library?
  2. chmod on its own might not be sufficient if you’re e.g. mounting a folder from an external drive with default configurations.
  3. file naming → have you named those tv episodes according to Plex naming schema (incl. the required folder structure)? Plex will ignore videos that don’t have a pattern/segment providing season/episode number information

for #1 and #2 I strongly recommend to check out the Linux tips & tricks: