If your show is missing episodes on the shows main page...
You can find them by starting a video, click on the three bars icon on the right hand side of the video control and you will bring up the list of all the shows including the ones missing on the shows main page.
hope this helps
If you are watching the show subtitled and it's available on Funimation, make sure you check the appropriate language box(es). The shows episodes may not show, if you don't have that box checked.