Community Forum This site can’t be reached

New Poster This site can’t be reached

I was able  to  access this site Thursday, but Friday I was unable to acces the site to view what's on the different channeles.  I receive this message every time I tried " This site can’t be reached it may be down and accessible later or permanently down.  I know this isn't true because I can access it on my laptop.  I'm on my iMac  and my browser is Google Chrome Version 49.0.2623.112 (64-bit).