ios - 現在の日付より前の自動更新サブスクリプションの有効期限

Question

MKStoreKit で、自動再生可能サブスクリプションを購入します。1 年間購入する場合、このメソッドはサブスクリプションが有効かどうかをチェックします isSubscriptionActive は 1 を返します。何が問題なのですか？

2014-06-22 16:11:45.160 ForTraderApp[3035:60b] expiresDate = 1402747114000.000000
2014-06-22 16:11:45.161 ForTraderApp[3035:60b] currentDate = 1403439105.161849

MKStoreKit v.5 ios7.1

- (BOOL) isSubscriptionActive:(NSString*) featureId
{
   MKSKSubscriptionProduct *subscriptionProduct = [self.subscriptionProducts   objectForKey:featureId];
   if(!subscriptionProduct.receipt) return NO;

   id jsonObject = [NSJSONSerialization JSONObjectWithData:subscriptionProduct.receipt options:NSJSONReadingAllowFragments error:nil];
   NSData *receiptData = [NSData dataFromBase64String:[jsonObject objectForKey:@"latest_receipt"]];

   NSPropertyListFormat plistFormat;
   NSDictionary *payloadDict = [NSPropertyListSerialization propertyListWithData:receiptData
                                                                    options:NSPropertyListImmutable
                                                                     format:&plistFormat
                                                                      error:nil];

    receiptData = [NSData dataFromBase64String:[payloadDict objectForKey:@"purchase-info"]];

    NSDictionary *receiptDict = [NSPropertyListSerialization propertyListWithData:receiptData
                                                                    options:NSPropertyListImmutable
                                                                     format:&plistFormat
                                                                      error:nil];

    NSTimeInterval expiresDate = [[receiptDict objectForKey:@"expires-date"] doubleValue]/1000.0f;

    NSLog(@"expiresDate = %f", [[receiptDict objectForKey:@"expires-date"] doubleValue]);
    NSLog(@"date = %f", [[NSDate date] timeIntervalSince1970]);

    return expiresDate > [[NSDate date] timeIntervalSince1970];
}