No luck finding a solution to this here, on Google or on wordpress.org. I hope this helps someone in a similar situation.
I switched pretty permalinks from /wordpress/%postname%/ to /index.php/%postname%/ and now the breadcrumbs appear as Under Construction / [name of FAQ]. Before they read FAQs / [name of FAQ]. I can see that the Under Construction link refers to the old location of the faqs page, and therefore it produces an error:
"It seems we can’t find what you’re looking for. Perhaps searching, or one of the links below, can help."
I tried index.php/faqs in the "FAQ homepage" setting to no avail.
Thanks in advance.