Our apologies for the inconvenience caused.
Please note that, because you can purchase any paid item available in-game from the Play Store (Google) or the App Store, and the payment method varies for each adventurer, there could be many possible causes as to why you can't place an order.
We advise you to refer to the following solutions!
How to solve World Flipper purchase issues
1. Try exiting the game and restart the game, making sure your internet connection is stable.
2. For any store account setting issues (please contact the store):
* Google Pay Customer Service Center
- Link: https://payments.google.com/payments/u/2/home#oneTimePurchase
* Apple Customer Service Center:
- Link: https://expresslane.apple.com/GetproductgroupList.action