Is it normal that purchaseProduct() sometimes doesn't open anything for minutes and somethings works within seconds?

[tulssinep]

Sandbox Environment

---

I've been testing auto renewable subscriptions and sometimes nothing happens when I click my purchase button, there is no purchase UI coming up.

print("subscribe pressed")
SwiftyStoreKit.purchaseProduct(IAPSingleton.s.subscriptionProductID, atomically: true) { result in
    print("result") // This also doesn't appear
}

Is this to be expected during sandbox/ when the account has already made a few purchases or is this a library issue?

[puchog]

I am getting this issue too, on sandbox environment, sometimes it just don't work and then start working again...