I managed to turn off sandbox mode =) im able to test the game properly without waiting for Apple's 1 week approval!
So whats happening now is....I cant buy it more than once..
on iOS, it prompts "This in-app purchase has already been bought. It will be restored for free" and I cant get pass this....
Basically, a "consumable" item is acting like a "non-consumable" (it failed to finish a transaction) I think...
Anyways, I've been trying to figure this out with Ludei, but it seems like its something they need to fix on their end =(