The following has worked for me whenever any of the MS Solitaire Collection games won't load - not a perfect solution, as the problem eventually seems to come back, but if you don't mind a couple of extra minutes spent resettting it occasionally, this seems to work every time:
Go to SETTINGS, SYSTEM, APPS & FEATURES. Find the MICROSOFT SOLITAIRE COLLECTION app and left click it. ADVANCED OPTIONS will then appear - left click on that and then click RESET and then the second RESET button that will appear. Everything should then work again.
Go to SETTINGS, SYSTEM, APPS & FEATURES. Find the MICROSOFT SOLITAIRE COLLECTION app and left click it. ADVANCED OPTIONS will then appear - left click on that and then click RESET and then the second RESET button that will appear. Everything should then work again.