My app is deployed to https://job-tracker-two-phi.vercel.app (Vercel) and I’m using Facebook Login for authentication. But when I try to add the domain in the Meta Developer portal, I get this error:

❗️ “You are sending too many domains. You can use the API to update this if DFC doesn’t work.”

From what I’ve read, Meta doesn’t allow wildcard subdomains (which Vercel uses for previews), and there's a limit to the number of domains you can add manually.

Has anyone:
- Found a workaround for preview deployments with Facebook Login?
- Used a custom domain to solve this reliably?
- Successfully configured Facebook Login with Supabase + Vercel?

Would appreciate any tips 🙏

Stack:
- React / Nextjs
- Supabase for auth
- Vercel for deployment
- Facebook Login (OAuth)

Thanks in advance!