Hello Eedunn,
Thank you for reaching out Surface Community. It is possible this is due to compatibility issue. As per checking Disney Magic Kingdoms, the Minimum and Recommended System Requirements are OS(Windows 8 Mobile, Windows 8.1). This might be the reason why it is not working properly. If Gameloft says this should work but your Surface does not have enough storage, it causes your game to crash. Please make sure you have enough storage. You can do Disk Cleanup, Select the drive you want to clean up e.g. Drive C., Tap Ok, Select all unnecessary files to delete and click Ok. Also try to set the battery slider for Best Performance. Try to test if that works. If issue persist, I highly recommend that you contact again the developer to verify the compatibility since it clearly states that the Recommended OS is Win 8.1 not Win 10.
Please keep us posted.
Regards,
KarenJune_F