Same issue here. IOS ipad pro. Bought the bundle but I didn't have a credit card attached to my account so it opened up the app store to add one and finish the purchase. There was an error when i returned to the app something along the lines of "could not complete this purchase". Closed the app and reopened it and none of the bundle content is accessible. The bundle shows as bought and greyed out in the store and all the individual items are showing as -1 gold.
*edit* Just tried closing the app and opening it again. Everything is working now
