Yesterday, 2019-02-20 at about 1930 UTC there was a power outage at UW-Milwaukee that affected some of the campus, including the data center where Einstein@Home and Albert@Home servers are housed. Today, 2019-02-21, the cooling system has not recovered and as a result we have shutdown a number services at UWM, including Einstein@Home's Web page.
We currently are in the process of restoring services, but there is no timelime I can report. Volunteers do not need to do anything with their BOINC clients.