Setting Subscription ON
Caution: Turning Business / Services Subscription ON will change the state of all already created Business / Services by Business / Services Owners ( not the ones created by Admin ) into basic Businesses with just Business Name and Slogan appearing. To solve this issue you need to set Memberships to old Users from Users Profiles from WordPress Backend.
Turning Subscription ON
Go to Wyzi Toolkit -> Business Settings -> Subscription Mode and change it into ON.