I recently purchased the domain shopsunvalley.com and connected it to my Netlify site. The default Netlify subdomain (cozy-phoenix-6cfc14.netlify.app) works correctly and returns HTTP 200. DNS is configured correctly using Netlify DNS. However, all custom domains (shopsunvalley.com, www.shopsunvalley.com, and preview.shopsunvalley.com) return HTTP 429 from Netlify Edge, and Let’s Encrypt cannot complete the ACME challenge. Could you please check whether there is an old domain association or an abuse/security flag preventing the custom domain from serving traffic?