I had the same issue, too. It wasn't possible to go to buzzerbeater.com with chrome, firefox, opera. I had wifi (good connection) and the other page on internet were working except BB. So I tried with my iPad with Puffin App and it worked.
Im just wondering what was exactly the problem. Chrome and the others browser said that bb needed too much time to load.
My first measures would :
Empty browser cache
all temporary delete
Reboot computer
and it worked, but not until the next day. it was still a bit weird.