First off you have a bunch of errors in the console. Mixed content being blocked.
Something either in the theme or one or more of the stacks is probably not current.
Make sure you changed the URL in the general settings to https:
You have the meta tags for the og:url set to what looks like an invalid URL:
Are you using some sort of SEO Helper tool? Did you add meta tags manually in the RapidWeaver project? The Twitter tags are wrong as well.
They don’t look to be the RapidWeaver 8 Generated Social tags. They look to be in the wrong location, RW places them at the very top of the head section, yours appear to be farther down like the user head area.
Anyway, I’d worry about the mixed content first. The page is broken right now as active mixed content will be blocked by the browser.
Then tackle the meta tags.
Then run the site one page at a time trough the facebook developer tool
It will show you sharing errors and previews. Once you have it fixed hit the Scrape Again button on the page.
