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