Activate In-app billing with Order number
As shown in the screen below, we could not check whether you have purchased a Nine app in the environment where Google Play Service does not operate normally. In this case, you can activate your Nine by using the order number among your purchase information.
First of all, you have to select "Activate In-app billing" on the purchase screen.
You can get a confirm your license by entering your order number into the input field and tapping the Activate as follows.