Lovable problems and how to fix them

Fixes for Lovable apps that work in the editor preview but break once real visitors arrive.

• Lovable site not showing on Google: causes and fixes

  Your Lovable site is live but Google shows nothing, or only the lovable.app address. Why it happens on old and new projects and how to get indexed.

• Lovable custom domain not working: statuses, causes and fixes

  Lovable domain stuck on Verifying, showing the old site, a Cloudflare 1001 error or an SSL warning? What each status means and the DNS records to fix.

• Lovable app shows no Supabase data: fixing Row Level Security

  Rows exist in Supabase but your Lovable app shows an empty list with no error. Why Row Level Security returns nothing and how to write policies safely.

• Lovable login redirects to localhost: how to fix auth URLs

  Confirmation or reset emails from your Lovable app open localhost:3000 or the preview URL? Fix the Supabase Site URL, redirect list and Google origins.

• Lovable app gives 404 on refresh after export: the fix per host

  Your exported Lovable app works from the homepage but /about gives a 404 on Netlify, Vercel or GitHub Pages. Add the right fallback for your host.

• Lovable link preview not showing the right image: how to fix it

  Sharing your Lovable site on WhatsApp, Slack or LinkedIn shows no image, a placeholder or the same card on every page? Set per-page Open Graph tags.

• Lovable contact form not sending email: how to make it deliver

  Your Lovable contact form shows a thank-you message but no email arrives? Find out whether the form has a backend, then fix the email key and sender.

• Lovable changes not showing on the live site: what to check

  The Lovable editor shows your changes but the live site is still the old version, or broke while the preview works. Why it happens and how to fix it.

Also see: Lovable testing · 9 bugs every AI-built site ships with