The Unique Security ID adds additional protection between the Child plugin and your Main Dashboard. The Unique Security ID will need to match when being added to the Main Dashboard. This is additional security and should not be needed in most situations.
If you want to activate the security code feature go to:
- MainWP Child > Settings page,
- Click “Require Unique Security ID”,
- Click Save Changes button.
This will give you the security code you need to enter on your Dashboard site.
When you attempt to add your site to your dashboard you will need to enter this security code in the proper field: