You need to call the purchase method after searching the product information.
Call IAPV4.getProductInfo then IAPV4.purchase.
ex) Purchase failed
ResultAPI: ResultAPI { code = -6100306, msg = [IAPv4] Failed to request purchase product. Market product not found. [HiveIAP] purchase check error: need product info for marketPid: dva_dia_5.9k }
* Hive Developers | Product Search and Purchase | 