Hello @Shannon77,
If you check your pricing settings at the moment does it show the extra guest charge?
I'm asking as, when I look at your listing there is no extra guest charge. It doesn't even say "Extra people: no charge", which is unusual.
I'm not sure which browser you're using. If it's Firefox or the Microsoft one I've found in the past that I had to enter the amount manually in the box rather than using the little increase and decrease arrows to set it. I then had to hit "return" or click on the grey pricing settings window for the change to take effect.
If the above doesn't help then contact Airnbnb customer support.
Steve.