If games aren't loading, it could be a problem with your internet connection.
If you're playing on a mobile device, make sure you have at least a 3G network or a fast Wi-Fi connection., or if you're playing on a computer, try connecting it directly to your router, rather than using Wi-Fi.
If that doesn't work, contact your internet service provider and check why your connection is slow, you can also try to clear your cookies and cache.