First 3D print attempt pushes mat off the base

Did the auto-level.
Did the height setting.
Then when I start to print. The nozzle comes down too far and pushes the mat off the base.
Then I quickly press “Stop”.

Please tell me what I am doing wrong or what I need to do to fix it.

Thanks, Jeff

when your doing your height setting, don’t follow the directions, rather set it so you can just barely feel resistance on the card(no creasing). then if you have adhesion issues lower the Z offset.