Hello Rose, after a lot of try and error, disabling plugins ant themes etc we seem to have found a solution, wich is not the best I believe. The problem with the attributes and the variations buttons not working was solved by disabling the XStore child theme ver 1.0 !
So we deleted the child theme, downloaded the files from envato and reinstalled the child theme, that now shows version 0.0.1, and had the same exact problem. When again disabling the child theme, both attribute and variation buttons work fine with no problems and we have the same screen view as you do.
We do not understand this behavior and although the use of a child theme is not mandatory we do consider it as standard procedure. Any ideas what is going on here?
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.