Make sure that all parts of Windows are totally up to date, including Internet Explorer (& its add-ons) even though you use Maxthon.
Ensure that any applications that the games' websites recommend are given full permission in the firewall have been allowed under Web and Email Protection > Firewall > Internet Connections for Programs.
Try using a different browser to see if it helps.
If that all doesn't help then I recommend you immediately open a case with Technical Support. It's free of charge and available by phone or online chat.
They are linked under Useful Links at the top of this page.
I notice in your profile you mention Security Scan Plus.
If that is listed in your programmes I suggest you uninstall it as it is an unnecessary addition.