Not grabbing correct description

well because 1 you’re not using a seo plugin to give a specific meta description that I can see (maybe doing it statically in your template?) and 2 the first thing you have in the post/page content is

<style type="text/css">
.calculatebutton {margin-left:350px;}
@media (max-width : 480px) {
.calculatebutton {margin-left:0;}
}
</style>

Solution A: use an SEO plugin to put out a good meta description
Solution B: take css out of the body content

Thanks. I moved the CSS further down into the body since it is only used on this page. Now the description displays and the FB debugger reports no errors.

I have another question about this same post. I’ve read the g+ will use OpenGraph just like FB. But it doesn’t pick up the description when I post as a “link”. Do you have some idea about that?

G+ doesn’t do exactly what FB does but they say they’ll use open graph tags as a fallback if the G+ specific xml isn’t there.

See here: https://developers.google.com/+/web/snippet/

G+ doesn’t have (that I know of) a cache control like FB’s debugger so maybe it’s not showing a desc because it’s cached or idk. Google+ is a whole other beast. If you want very specific control over the way G+ handles your post you should look into tagging your page with schema.org protocol.