We check this website, now gw2.uw-gaming.de is up and dont blocked for our system and other users of the Internet.
So, answer to question: Is gw2 Down Right Now? - NO! gw2 is up!
If you have problem with access to site gw2, and domain gw2.uw-gaming.de is not avalible.
Clear browser cache and/or try other web browser
(Chrome, Firefox or Safari).