I suspect that is your cache issue, for now i temporary disabled your cache setting (
http://take.ms/2ckJw) and i tested again using your site admin account, add a new question from your backend.
Then it did updated that rank for your site admin, you can check my screenshot here
http://take.ms/SRoEB
By the way, i realised you unable to add new question and reply on your frontend, your template generated these error :
http://take.ms/eMHg7 . In meanwhile, can you consult with your webhosting provider regarding this and see how it goes.
If you switch to protostar template or temporary turn off compress javascript setting (
http://take.ms/m2ELx) from the template, it will render the Tiny-mce editor and able to submit new question and reply.