First off your naming convention is waay off. You need to follow the guidance in: Naming and Organizing Your TV Show Files | Plex Support.
I know it always worked in the past. But PLEX is famous for working…until it doesn’t. Many of us went our own way but eventually ran into the unrecognized files problem. Correctly naming them was the solution. This may not be your only issue (might be individual file permissions) but it is something that must be done before other solutions can be found.
Also, do the PLEX Dance after renaming.
