Hey Francis,
Firstly, the reason why I show you above screenshot which I tested on Tiny-MCE editor on your site is because when I logged in from your site frontend, it already configured to show Tiny-MCE editor, To be honestly I didn't change any setting from your Easyblog setting from backend, so I was assume that you are complaining about this editor do not work at the first.
After I described the thing is work for me, then I've mentioned
if the issue still persists, perhaps you can provide us more details how to replicate this?.
By the way, I've tested again using Easyblog build-in Composer editor on your site, this is what I tested on your site, you can review on my video link here :
http://screencast.com/t/QxxpsaK7t , it seems work fine for me, can you check and see is it I missed up something or replicate wrongly? If that is the thing, can you please guide me step by step how to replicate this issue so that I can directly check on this further.
I see nothing about joomla article.
I am not quite sure what do you mean `see nothing about Joomla article` on your site, can you elaborate more details regarding this section?