Unfortunately I’m suffering from this problem, too. I’ve tried to log in many times at around 10:20a.m – 10:40a.m (BST), 22/04/2017.
QtCreator is allowed through the firewall, but I see the same error as the others above: “Internal Error! Please contact support!”. I’ve tried two email addresses and reinstalling the VPlay SDK.
Any help would be appreciated.