If you haven't received your log in details, and other people have, it is generally because the email address supplied for you was incorrect or isn't working.

The log in may have  been sent to you but didn't arrive. Please create a ticket with your name,

a working email address, name of school and postcode, and name of class you are teaching ( eg P1M or Year 2) and a log in

will be set up for you with the correct email address.