Hello Vercel Community,

I'm having trouble connecting my custom domain busqiaapp.com to my Vercel project busqia-3 (Hobby plan).

Both busqiaapp.com and www.busqiaapp.com show Invalid Configuration.

My DNS records at Porkbun match the values shown in Vercel:

• A record: @ → 216.198.79.1
• CNAME record: www → 39385aa6918351fc.vercel-dns-017.com
• TTL: 600

I've also verified that:

• Porkbun nameservers are configured.
• DNSSEC is disabled.
• There are no AAAA records.
• No URL forwarding is active at Porkbun.
• The latest production deployment is Ready.
• The application works correctly at https://busqia-3.vercel.app.
• www.busqiaapp.com is associated with the current production deployment.
• The apex domain redirects to www using a 308 redirect.

I've refreshed the domain configuration multiple times without success. The custom domain has also produced ERR_CONNECTION_CLOSED and, previously, 404 DEPLOYMENT_NOT_FOUND.

Could someone help identify why Vercel is not validating these DNS records? Is there an issue with DNS resolution, domain ownership verification, or SSL certificate provisioning?

I would appreciate specific troubleshooting steps that do not require deleting the existing deployment.

Thank you!