Dear aSheryl,
Please help to check if following steps could resolve your problem or not.
Great thanks for your help!
1. Please right click on the desktop.
2. Select [Personalize]
3. Click [Display]
4. Enable [Let me choose one scaling level for all my displays]
5. Select one of the items "Smaller, Medium or Larger".
6. Click "Apply".
7. Pop up a dialog and click "Sign out now"
8. Sign in the system.
9. Launch YouCam and check if the problem has been resolved.