EasyBlog - Showcase Module

Hello. Regarding the EasyBlog - Showcase Module, it is not allowing multiple categories. Though on mouse-over of the Category label, the message pops us as "Please select your EasyBlog category. To include multiple categories, separate values by comma." Now as the field is not editable, hence nothing can be inserted. And on popup selection, only one category can be selected.

Please could you help me where i am making the mistake.

Thanks,

Sharat