The default reference on your platform will always be the PatentRenewal.com system reference number.
To change your patent reference:
Log in to your platform
Click on the "Settings" tab that lies in the menu bar on the left
Click on "Advanced Settings" under Settings
Click on "Platform Settings" under Advanced Settings
Then scroll down until you see the heading "Patent References"
Select the Patent Number Reference and Family Reference you prefer to see on your platform
Please take a look below to see this in action;