Icon keeps disappearing

My son loves this app however the icon keeps disappearing and I can no longer get to the app without going through the App Store. Please add a reload event to your apps so that when this happens it can be fixed. Getting very frustrated with it at this point and refuse to upgrade to the additional 2 apps in this group until this us fixed! My son has been using it for two years and all the sudden these last three months the only way to get to it is through the App Store.

UniRoo about Build A Truck: Duck Duck Moose