I am attempting to implement Google Play in-app purchase v3, after successfully implementing it in v2. However, every single time I attempt to purchase one of my real in-app
error purchasing: iabResult: IAB returned null purchase Data or data Signature (response: -1008 unknown error)
if you get above error when you use launchPurchaseFlow() method and get this error check your product type. i was created subscriptions but i needed managed products for example Non-consumable product type. I mean be carefully about buying or subscriptions