Hey everyone!
Google can’t crawl protected content on your page, because that’s only ever available to logged in members, but Google can crawl the page itself. That means when your member-only page is crawled, Google will only be able to take into account the logged-out, unprotected content.
Member-only content is not really designed to rank in Google though, so if you’re trying to grow your audience via SEO then it’s best to publish public content for this purpose.
We also recently introduced a new public preview feature in the editor which allows you to include a public intro of any length in your post - so this might be helpful to get a member-only post to rank, too!