Please check that you are logged into your Google Play account. If you are, then try to log out and log in again. Then this issue should be resolved.

If you still have a problem with loading products in the shop, please contact Google at link: https://support.google.com/payments/contactflow?hl=en

If the issue still occurs, please use the “contact us” button in the game menu to get in touch with us directly and we will help you as soon as possible.