ios application rejected due to in app purchase payment issue - ios

Question

My app has been rejected by itunes.
Their reason is：
After we tap the buy button the app does not initiate the password
window to finish the In App Purchase process and only displays a
message "waiting" then nothing happens.
They mean there is purchase dialog,but when tap the buy button,their is no the password window.But it is OK when I test it.
The password window initialization is not under my control, what should I do ?
Here is my code:
-(void)buy:(NSString*)type
{
buyType = type;
//judge whether can buy product
if ([SKPaymentQueue canMakePayments]) {
NSLog(#"can buy");
[self RequestProductData];
}else{
UIAlertView *alerView = [[UIAlertView alloc] initWithTitle:#"Alert"
message:#"You can‘t purchase in app store（不允许应用程序内购买）"
delegate:nil cancelButtonTitle:NSLocalizedString(#"Close（关闭）",nil) otherButtonTitles:nil];
[alerView show];
[alerView release];
}
}
-(bool)CanMakePay
{
return [SKPaymentQueue canMakePayments];
}
-(void)RequestProductData
{
NSSet *nsset = [NSSet setWithObject:buyType];
SKProductsRequest *request=[[SKProductsRequest alloc] initWithProductIdentifiers: nsset];
request.delegate=self;
[request start];
}
//<SKProductsRequestDelegate>
- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response{
NSArray *myProduct = response.products;
// populate UI
for(SKProduct *product in myProduct){
SKPayment *payment = [SKPayment paymentWithProduct:product];
[[SKPaymentQueue defaultQueue] addPayment:payment];
}
[request autorelease];
}
//alert error
- (void)request:(SKRequest *)request didFailWithError:(NSError *)error{
UIAlertView *alerView = [[UIAlertView alloc] initWithTitle:NSLocalizedString(#"Alert",NULL) message:[error localizedDescription]
delegate:nil cancelButtonTitle:NSLocalizedString(#"Close",nil) otherButtonTitles:nil];
[alerView show];
[alerView release];
}
-(void) requestDidFinish:(SKRequest *)request
{
}
-(void) PurchasedTransaction: (SKPaymentTransaction *)transaction{
NSArray *transactions =[[NSArray alloc] initWithObjects:transaction, nil];
[self paymentQueue:[SKPaymentQueue defaultQueue] updatedTransactions:transactions];
[transactions release];
}
//<SKPaymentTransactionObserver>
//----listen to the purchase result
//
- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
for (SKPaymentTransaction *transaction in transactions)
{
switch (transaction.transactionState)
{
case SKPaymentTransactionStatePurchased://purchase ok
[self completeTransaction:transaction];
[[transaction payment] quantity];
NSLog(#"%#",[[NSString alloc] initWithData:transaction.transactionReceipt encoding:NSUTF8StringEncoding ]);
NSLog(#"transaction id:%#",[transaction transactionIdentifier]);
break;
case SKPaymentTransactionStateFailed:
[self failedTransaction:transaction];
NSLog(#"-----交易失败 --------");
break;
case SKPaymentTransactionStateRestored:
[self restoreTransaction:transaction];
case SKPaymentTransactionStatePurchasing:
break;
default:
break;
}
}
}
- (void) completeTransaction: (SKPaymentTransaction *)transaction
{
[[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}
-(void)recordTransaction:(NSString *)product{
}
//
-(void)provideContent:(NSString *)product{
}
- (void) failedTransaction: (SKPaymentTransaction *)transaction{
[[SKPaymentQueue defaultQueue] finishTransaction: transaction];
}
-(void) paymentQueueRestoreCompletedTransactionsFinished: (SKPaymentTransaction *)transaction{
}
- (void) restoreTransaction: (SKPaymentTransaction *)transaction
{
}
-(void) paymentQueue:(SKPaymentQueue *) paymentQueue restoreCompletedTransactionsFailedWithError:(NSError *)error{
}