Yola has been hacked, obviously, presumably by a disgruntled employee. This, along with all their other problems (including their extremely kludgy interface), seemed like a good reason to migrate this site to Piereligion.org. Please update your links.
Sad to say, the folks at Yola have been unable to resolve their technical and financial problems and it's obvious from the rude and unprofessional behaviour of their employees that they are going out of business. But don't worry! Proto-Indo-European Religion will still be on the internet when Yola is just another 404.