Mod Tracks not recognised

I have unzipped and installed the following tracks :-
bathurst_fm7
bridgehampton
donningtonpark
lemans_2017
road_america
I made sure that each folder I put in ". . . /content/tracks/" was the original folder, and not the additional folder that winRAR created.

However, when I start Assetto Corsa (v1.16.3), none of the mod tracks show up in the Tracks Menu.
I have seen that many people can see the tracks in the menu, but they won't load.
I can't even see the tracks.
Each track folder that...

Mod Tracks not recognised