I'm trying to get In App Purchase with my existing iPad App working. I'm stuck retrieving the Product Information from App Store:

- (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response

The SKProductsResponse only contains invalid Product IDs. I tried every potential solution I found here or on the net:

• my App ID has In App enabled
• I generated a new provisioning profile and installed it on my device
• I restarted the device
• my App ID is the same as in my Info.plist (it's in the Store since weeks)
• I added In App Purchases for the App with "cleared for sale" checked
• I added Screenshots to my In App Purchases
• I tried different naming schemes for the Product ID
• I made triple checked that I pass the correct Product ID to the SKProductsRequest
• I'm passing a NSSet to the SKProductsRequest instead of a MutableSet
• I updated my App with the upcoming version containing in App purchase and submitted it for Review
• I approved one of my In App Purchases, just to see if that helps
• I waited more than 24 hours

All of these actions brought me nothing but invalid Product IDs.

I hope someone can point me into the right direction, because I'm running out of ideas.