I can’t buy any gems. It says they are unavailable.
I hope these FAQ articles will help: https://smallgiant.zendesk.com/hc/en-us/articles/115005198049-Can-t-make-a-purchase-Android-
https://smallgiant.zendesk.com/hc/en-us/articles/115005195625-Can-t-make-a-purchase-Apple-iOS-
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