Same problem. The unsubscribe link in the mail is not usable, even when copying the correct part to the browser. Error message: {"success":"false","errorTxt":"Unspecified Error"}. Trying to manage subscriptions on the website by using the link from the mail or choosing "Follow Stream" options from the site menu is also impossible, error is: Temporarily Disabled until further notice. I will have to add Windows Central to my Junk Filter shortly, as I am currently receiving some unwanted disturbances.