Modify the Suspended Account Page in WHM
To modify the suspended account page in WHM:
In the Account Functions section on the left-hand sidebar click 'Modify Suspended Account Page'.
This page will display a box with all the code in it for the suspended account page. Go ahead and modify it to your preference.
When you've completed all modifications click Save.
You will be taken to a new page telling you that the new suspension page has been saved. Users who have a suspended site will now see the changed layout on their sites.