To access the myVIP Rewards Store, make sure your device is connected to Wifi/cellular data.
If the Rewards Store is still not loading, it's possible there is a server issue, which usually resolves itself in a few minutes.
If the Rewards Store still isn't loading, try closing and reopening the Solitaire app and opening the Rewards Store.
myVIP is still a new feature that may experience some hiccups along the way! 😉