Seems to think s4e14 is the first episode?

Using the Plex TV Series agent is ok. It just means you can ignore the server-wide agent settings (Settings > [Server Name] > Agents).

Changing the Use local metadata option will only apply when you first scan a file. So simply disabling it won’t immediately change the metadata of your shows. You will need to refresh the episode metadata (you might need to perform the full Plex Dance procedure to avoid any collisions with previously loaded local metadata).

Before getting there… when you edit s04e14 (:pencil2: ), does it show tgd correct date?