I checked the database and everything is fine, naming convention of files is same for all my shows which do not have issues, season name - s01e01 - episode name.mkv:
You can’t fix match on a season, only the show as a whole. On the show page you will see the seasons posters below the show poster . on a season page you will see the episode of that season under the season poster. If you just added those episodes from that season the Recently Added hub on the home screen will show the season poster which goes to season page.
Click the title of the show to get to the show page.