Hey there,
I've compare with your existing blog category and your screenshot, it seems like it did show your subcategory, you can check my screenshot here :
http://take.ms/a6B9Y
Am i missing something here? Please advise.
By the way, if that smart slider didn't show the correct exiting blog categories, I think you can consult with them if all the blog categories did show correctly in Easyblog category edit page (screenshot :
https://www.screencast.com/t/SGjCqjbyH).