title: "PEX-CatalogAvailabilityDataNotFound" on Windows Store purchase
body: <p>I have a Desktop Bridge (not UWP) Delphi application published to the Windows Store. The app is published and approved.</p>
  
  <p>Trying to use in-app purchases brings up the store UI, but after the logon I get the following error message:</p>
  
  <pre><code>PEX-CatalogAvailabilityDataNotFound
  </code></pre>
  
  <p>The code goes:</p>
  
  <pre><code>StoreContext := TStoreContextStatics.Statics.GetDefault;
  (StoreContext as IInitializeWithWindow).Initialize(FMXHandleToHWND(MainWindow.Handle));
  StoreContext.RequestPurchaseAsync(TWindowsString.Create(AddOnName));
  </code></pre>
  
  <p>Looks as if the store has trouble finding the product. But the add-on name is valid, and the respective add-on is published.</p>