Unable to purchase one of the games Zen Pinball 2-

[Lillyaron]

I´m trying to buy one of the pin ball games, i´ve got many of , but this time none of them works, when I click at the cart shows restore your in-app purchase, then I enter my login and it shows that there is no app to be restore.

I don´t know what´s wrong, if I hadn't´t purchase before at least it could be understandable , but i´ve got about 10 !!
Could you help me?
I've just tried again and now shows please wait.... And i´m waiting...waiting....