FileBot

this is a Kodi "problem"
try asking here https://forum.kodi.tv/

Keep in mind that Kodi representation of data is independent of filenames.

Good filenames allow Kodi to understand the files as episode objects. And then the theme or user preferences in Kodi can then display that information in any way you prefer (though might depend on the theme and what they allow you to configure).

Best to check in the Kodi forums. Maybe just a matter of a checkbox somewhere in the Kodi configuration.