Your text box is too small for your text, so that's why you see the yellow warning box.
Follow the directions in the yellow warning box:
- Click into the text box and go to the last word. Remove all extra spaces after the last word. Click outside the text box.
- If the yellow warning is still there, stretch the text box and make it much bigger by dragging one of the small yellow squares at the edge of the text box. Click outside the text box.