In order to access to the MS Sql Server service you need to visit this website and click on the left menu connection and login.
After entering login and password, quoted in the email for the confirmation of the service activation, you will be able to access to the database.
Unlike the MySql service, MS Sql Server is “case insensitive”, or rather it is possible for you to enter login and password without paying attention to capital/lower-case letters.
The access guide can be consulted at this page: