Xbox says I no longer own my Sims4 pre-order bonus

I pre-ordered the Sims 4 and got the deluxe edition. The pre-order also included the perfect patio pack as a bonus. This morning the perfect patio pack content disappeared from my game but the store said I owned it. I followed the advice of uninstalling and reinstalling. However after I uninstalled it the store said I do not own it. I cannot reinstall the pack.

How do I get the pack back?

:)