I can't for the life of me embed Google Docs or Sheets using Smart Links. I'm using the new editor in Confluence, and the Google document I'm trying to embed has been published to the web (I can open the docs.google.com embed link in an incognito tab, no problem).
When I paste this link into Confluence, it defaults to the "Inline" link style. But instead of seeing an embedded version of the Google document, I just see the link URL and the message "Can't find link". If I switch the link to the "Card" style, I instead get the message "We couldn't find the link. Check the URL and try editing or paste again."
What am I missing?