The Framer Marketplace is such a mess right now...
After repeatedly getting the "Failed to save component. Please try again." error, I finally managed to publish my component by changing its name in the submission form, even though I didn't actually change the component name itself.
Now, when I visit the dashboard, the component shows as "Published", but I can't see it anywhere on my Marketplace profile.
For the demo page, I created a separate component called DEMO. Could that be causing the issue, @Framer ?
Also, if it matters, I never received any automated email regarding the component submission.