Can rclone help me to connect my pCloud folders to Plex Media server (Synology)

I'm facing something quite strange.

Once mounting command is started I loose permission access to the parent main folder (/volume1/MassMovies/ from Synology user interface)
Going to /volume1/MassMovies/ from my macos, I can still list /volume1/MassMovies/ folders but it doesn't display the PCLOUD folder !

Impossible to add the mounted folder from Plex. Folder is grey and not accessible.

Going into the folder via a second terminal window allow me to see the pCloud files mounted !
So there's maybe a permission issue behind !

Can this help me ?

PLCOUD mounted folder shows drwx------ , my own local folder as drwxrwxrwx+