I have a website www.texasoutlawchallenge.com in my hub.

I have a website http://www.texasoutlawchallenge.com in my hub. According to the UPTIME hub it has been down for about 15 hours. Last night the owner of the site said it was down and he couldn't go to it. But I can go to it without a problem (Safari, Firefox, and Google Chrome). it does load a little slow, and yes I cleared cache, browing history and disabled cache if the browser allowed me to do it.

So to me it appears to be up . . why would the hub/uptime still say it is down?