Transfer in-app purchase from iPhone to iPad

[lexvo]

I purchased the Celsius app on my iPhone, and I also bought the extensions by an in-app purchase.

I can transfer the app to my iPad, but not the in-app purchase.

On the Apple support pages, I read that it is possible to transfer a non-replanishable in-app purchase ( http://support.apple.com/kb/ht4009 ).

However, the in-app purchase doesn't appear on my iPad and it looks like I have to pay again for it.

Maybe this is because the iPad is registered on my wife's name?

 

[Gav2k]

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5)

U click as if your going to purchase and it'll pop up saying previously purchased download for free.