yea when i click issues > get annual subscription > click the green "purchase subscription" then it says
"in-app purchases are not allowed" in one of those blue pop up boxes.
I thought they changed the policy because some guy was suing apple for his granddaughter charging up his card to buy some cupcakes or something in one of those ipad games.
tried googling it didn't find anything but then i didn't spend that much effort haha....
Have you had issues with in-app purchases before?
If you have two different app store log ins you might want to make sure everything is on one account.