MaxCdn test Error: Empty Authorization Key.

Hello

I am getting this error while testing max cdn on w3 total cache Error: Empty Authorization Key.

I have authorized w3 total cache with max cdn

here is my website link…http://www.ebuzznet.com/
and how to check if cdn is working fine on my blog…

http://ww.wp.xz.cn/extend/plugins/w3-total-cache/