case activateOnceError It is not possible to call
.activate method more than once.case cantMakePayments In-App Purchases are not allowed on this device.
case clientInvalid Client is not allowed to make a request, etc.
case cloudServiceNetworkConnectionFailed The device could not connect to the network.
case cloudServicePermissionDenied User has not allowed access to cloud service information.
case cloudServiceRevoked User has revoked permission to use this cloud service.
case invalidOfferIdentifier The specified subscription offer identifier is not valid.
case invalidSignature The cryptographic signature provided is not valid.
case missingOfferParams One or more parameters from SKPaymentDiscount is missing.
case notActivated Adapty SDK is not activated.
case paymentCancelled User cancelled the request, etc.
case paymentInvalid Invalid purchase identifier, etc.
case paymentNotAllowed This device is not allowed to make the payment.
case privacyAcknowledgementRequired The user needs to acknowledge Apple’s privacy policy.
case profileWasChanged The user profile was changed during the operation.
case storeProductNotAvailable Product is not available in the current storefront.
case unauthorizedRequestData The app is attempting to use SKPayment’s requestData property, but does not have the appropriate entitlement.
case wrongParam Wrong parameter was passed.