You can change your login / sign in details by going to Admin> My login details (this is located in the ‘User’ box on your admin page). 

You can change your Login User ID or Password by selecting the relevant option. 

This will then navigate you to a new screen to input new details and follow on screen prompts.

The name and postal address details held on your account will be used when you select the “Add self” option to your mailings.