The font size settings under Styles don't seem to change font size.
It seems you have a hard CSS code in WordPress theme which conflict with wpForo font styles. Please leave your forum URL to allow us check it.
Hi Robert, Thank you for your offer to check my site under construction:
I am using a Genesis theme. If you find where the theme is overriding wpForo, I will be able to edit it.
I see it already changed the size. Forum links have 20px size, this is not a default size. So it works fine.
Thank you, Robert. It is working.
wpForo is an excellent product. It is just what I was looking for. I am happy to be able to dump bbPress.