Wizz App free coins code unlock 2 weeks Wizz Gold free Mod iPA. When you view the class list, you will notice that some of the classes have a special label. A course will be marked as the 'best course', which means you have gained the most benefits from this course. Always check if the class has a queue and try to resolve it immediately. Another class will be marked as' low efficiency ', which means that the class's income is insufficient and needs to be upgraded.👇