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