Hello, Websync
It seems that you need to pay attention to the the words written in WHM > Main > Packeges> Feature Manager :
Two special feature lists called "default" and "disabled" will affect all users.
  • If you disable a feature in the "default" feature it will be disabled in every users' cPanel, unless another feature list grants them the feature.
  • If you disable a feature in the "disabled" feature it will be disabled in every users' cPanel. Unlike the "default" feature list no other feature list will be able to override this and grant the feature. If you don't want anyone to be able to turn this feature on at all, disable it in this list.