Newly added shows don't appear in folders when updating.

I renamed the folders after syncing them to Plex and now when I add new shows in these folders they don’t appear after refreshing them.
Is there a way of starting again with selecting folders for movies and tv shows? Cheers.

You might have to do what is called the “Plex Dance”

  1. Move the series folder out of your TV Shows folder
  2. Update the library ( just the little circle with an arrow in the top right)
  3. Empty the trash (Removes entries that are no longer found such as your recently moved TV Show)
  4. Clean the bundles (Removes the stored metadata from the entries removed in step 3)
  5. Put your TV Show back in the TV Shows folder
  6. Update the library ( you should see plex readd the item and attempt a clean match for the item)

Also make sure the Folder/files names are within Plex guidelines.
https://support.plex.tv/hc/en-us/articles/200220687-Naming-Series-Season-Based-TV-Shows