Sometimes like 5 min ago i had problems with connecting to the site and i know for sure that this wasnt my internet connection also cs2d has a reaction on the site i couldnt log in.
So is there anything wrong with the site?
Some times it takes only like 5 min and than i can open the site again but also i had that i took 20 min
Better yet, try clearing out your cache (or clearing all your history, cookies, etc) this usually works for me when a website doesn't function properly.