The My Account interface contains mostly read-only information about your User Permissions in SI 2018, as well as server connection and registration information.
Go to Start->Setup->Control Panel:
When you double-click this setting it opens the following interface:
The initial screen displays your user name, email, and you have the option of displaying your password. Depending on your permissions you may or may not be able to edit this information.
This will open a form displaying your User permissions:
This will display your SI 2018 Server information:
This will display your licensing information:
Note: If your user is assigned to the "Administrator" group you will also see your SI License Key displayed.
You can also access My Account at any time in the upper right-hand corner of the SI 2018 Client interface by clicking on your User Name: