v17 - Some seasons of TV shows are not shown (Paw Patrol, DBZ Kai)

Hi everybody

This is my first topic on this forum. I'm using Kodi on a Xiaomi Mi box 3S, (previously on Raspberry Pi 3), I'm in love with this product.

Nevertheless, I'm facing an issue that I wasn't able to solve by myself so far... Some seasons of TV Shows are just not shown in the library (it's not a library update matter). The seasons are all stored on my NAS the same way [name of the show]/[Season1] or [S01] or [saison 01] (coz I'm french :-))

For Paw Patrol, I see the 3 first seasons, but I'm not able to have seasons 4 and 5
For DBZ Kai, I have all seasons but the last one with Buu...

I've tried to rename, redownload etc... nothing to do

Of course I'm using a sync with TVDB through kodi.

Does anybody have a solution for that?

Thanks a lot !