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