Sorry for late reply. The features used within this Extension its hosted on our website. And when we enable CloudFlare against DDOS attacks on our server, then it will blocks all suspicious access to the server. We only enable the CloudFlare once every month for at least 48 hours. So it could be that you used that addon during that period!

Sorry for late reply. Its not dead, but its because the features used within this Extension its hosted on our website. And every now and then we Enable CloudFlare against DDOS attacks on our servers for 48 hours, which might have blocked you from accessing the extension.