objective c - In App Purchase Problem - Where Am I Going Wrong ? iPhone -

I'm trying to test my app purchase (in the sandbox) and have the following problem: < Ul>

The app retrieves the available products and displays them in a table.

The user clicks on "Buy"

The user is asked to enter a username and password (this is my test user).

A confirmation comes back on the screen saying that transsection is successful.

The problem is that the content has not been downloaded and the following method can not be called:

  - (zero) Payment queue ( SKPMantQueue *) Queued updated transaction: (NSARRA *) Transactions {for transactions in transaction transactions transactions} {Switch (Transaction.transactionState) {Case escapement transaction: Buying: [self-full transaction: transactions]; break; Case SkpMent Transaction: Static File: [Self-Failed Transaction: Transaction]; break; Case SCCMant Transaction Status Reinstated: [Self Restored Transactions: Transactions]; Default: Break; }}}   
 Can anyone help?   
 
 
 Check whether you added transaction supervisor  
  [[SKPMentQue Default Q] addTransactionObserver: mObserverObject];   
 Where mObserverObject is the object of the square where you have implemented the updated conversion process.