Plex Documentation → Your Media → Naming & Organizing Your TV Show Files
Not supported.
Plex requires sXXeYY format. For example, /Band of Brothers (2001)/Season 01/Band of Brothers (2001) - s01e01 - Currahee.mkv
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From the Naming & Organizing support article: “The most important bit in the file name is the appropriate season and episode number notation s02e17 which in this example means Season 2 Episode 17”
Also, lose the square brackets. Plex ignores info in square brackets.
After renaming, perform the Plex Dance to remove incorrect information from the Plex database.