Ensure that Hyperlink font have good contrast. As many Power Point themes automatically make your hyperlink font a different font color that does not have enough contrast to the background of the theme. The goal is to have a ration of 4:1 of your font color to background. Here's steps on how to do this:
Navigate to the Design tab.
Under Variants, select the down arrow in the corner (titled more) then a new box will open.
Select Colors, then under Theme Colors, the second to last item which is the 11th item, is Hyperlink.
Select Hyperlink and find a color with more contrast so the ideal ratio is 4:1 with your background.
Can't change a rubric once you've started using it.