Hi, I'm running a Next.js project (App Router) deployed on Vercel.

• The site works fine when accessed via *.vercel.app.

• But when visiting the custom domain https://reflection-proxy.com, it shows a 404: NOT_FOUND error.

• The domain is verified and set to "Production" environment.

• The route / is defined at src/app/page.tsx, and works fine locally.

• The project was initialized by copying from a previously working one.

I’ve already verified:

• The DNS and domain config are "Valid" in Vercel

• Project is on Next.js preset

• next.config.ts is minimal and correct

• Deployment logs show no error

• Routes render correctly on local dev

Let me know what else I can check or if this might be an internal routing bug.

Thanks in advance!