Q

About " Rainbow Gem"
Fee/Point

A
[iOS]
You can use your credit card and iTunes card for In-app purchase.
If you have any concern regarding the In-app purchase, please inquire to the Apple Inc.
 
[Android]
Payment method of Google Play
You can use your Credit Card/Google Play Gift card for the In-app purchase.
If you have any concern regarding the In-app purchase, please inquire to the Google Inc.
 
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