If there is a red box around any of the text on the label image, that indicates that the content is too big for the space.
This can be corrected using one or all of the following options.
Click on the heading (the line with Amount Per Serving), and move the vertical black lines until the red inner boxes are gone.
Use the purple side boxes to drag the label until the red inner boxes are gone.
Use the Zoom bar in the lower-left to resize the label for the screen as needed.