I am trying to test my application with in app purchases. I created features, test user, logged out from iTunes on the iPhone and used developer certificate. Load app from XCode in debug mode.

When I click "Buy" button I pass all checks for internet availability, canMakePayments and call

SKPayment *payment = [SKPayment paymentWithProductIdentifier:featureId];
[[SKPaymentQueue defaultQueue] addPayment:payment];

But all what I see is a pending view and after some minutes it failed in

- (void) failedTransaction: (SKPaymentTransaction *)transaction
{   
    if (transaction.error.code != SKErrorPaymentCancelled)      
    {       
        NSLog(@"failedTransaction");
    }   
    [[MKStoreManager sharedManager] paymentCanceled];
    [[SKPaymentQueue defaultQueue] finishTransaction: transaction]; 
}

Please advice in what direction I should go to figure out the problem and what else I should check.

P.S. All related questions on SO were checked with no luck.