This can happen when a computer can't properly set a login cookie. If all of the devices you tried are on the same network then the issue would be something in the network that is preventing the cookie from being set. If this is the case, you would need to talk to your network administrator about the issue.
I am the admin for a set of boards. When I log in from the main page of yourwebapps, it works fine and loads my list of boards. However, when I click on any of the individual boards, it loads a new... more