It was working fine, then yesterday evening it stopped. Gives me this warning: "Please stand by, while we are checking your browser...This check is taking longer than expected. Check your Internet connection and refresh the page if the issue persists." This message never goes away, it just refreshes every few seconds.
I am running Version 16.3 (17614.4.6.11.6, 17614) now—I updated it after I ran into the Chat problem, but it made no difference. Cleared cache as well.