The "active/inactive" judge feature appears to be new. A few judges are showing up as "inactive". After clicking the button to change the activate slider so that they're active and saving, they revert to inactive. Is there something I'm missing? What would lead a judge to be inactive?
Looks like a bug on our end - The toggle itself currently does nothing, as the code to change the judge's status is failing. I've filed a bug report, so we'll get it fixed shortly - I think it's an easy fix.
Should be fixed now.