We check this website, now tester112233.myshopify.com is up and dont blocked for our system and other users of the Internet.
So, answer to question: Is tester112233 Down Right Now? - NO! tester112233 is up!
If you have problem with access to site tester112233, and domain tester112233.myshopify.com is not avalible.
Clear browser cache and/or try other web browser
(Chrome, Firefox or Safari).