The digital-scholarship.com mirror site is having intermittent outages. As mentioned previously, the hosting service that supports this mirror had a serious problem. That problem was an explosion "that produced enough force to move walls." Read more about it at "Explosion Has Data Center Scrambling, Users Venting." Obviously, patience is called for regarding stable service restoration.
Keep in mind for any future service outages that Digital Scholarship has two sites that largely mirror each other and use different hosting services:
It is unlikely that both sites would be unavailable at the same time.
For further details, see "Digital Scholarship Publications Overview":