I have been checking for answers but i couldn't find one. What happens if you change your app fee. Let's say from $30 to $20. What happens to stores that already installed the app when it was $30?
Hi,it will be $30 for them! what you can do is, create new charge($20) and ask users to activate it. $30 will automatically cancelled once they accept $20
If they have 10 days left of the 30$ plan. Will they be charged $20 immediately?