Can not add, delete or share classes in and from my workshop

I can not add new classes to my own workshop atm, I can not share classes on the discovery page, I can not delete older versions of classes in my workshop (nothing happens when I click on delete). When I want to export classes from my Yamato world to my workshop some show up (like Oniro and Yokai-Hunter), others do not (like my Shugenja class). I use F&F only in browser on PC, tried Mozilla, tried Chrome, tried opera, all the same problem.