Font

According to the direction manual you can change the font by going to settings > prefernences > display > color and font. There is suppose to be a button to change the font. There are ONLY buttons to change the color. There is NO font button. The font is way too small. How do I change the font size.

Select the item you want from the drop-down list and the appropriate buttons to edit it will be displayed.

I have already done that several times. No font button appears. Just buttons to change the color.

Do you have any further suggestions?

If you use the drop-down list (don't click on the picture) to select one of the "... font" items, e.g. File display font then you'll get a button that lets you choose a font instead of the buttons that let you set the colours.