Hello Railway Support,

I'm experiencing an issue with my production Railway deployment where the generated URL returns a 404 "Application not found" error, while my staging environment works perfectly with identical configuration.

Environment Details:

- Staging URL: https://qall1k2j.up.railway.app ( Working)

- Production URL: https://s1qn7c7z.up.railway.app ( Returns 404)

- Project: NestJS API application

- Branch: main (production), staging (staging)

What I've Verified:

Production project shows as "deployed" in Railway dashboard

Build and deployment completed successfully

Environment variables are correctly configured

Start commands and build settings match staging

No errors in deployment logs

DNS propagation is working (api.seamless.finance resolves to s1qn7c7z.up.railway.app)

Expected Behavior:

Production URL should return API health check response like staging:

{"status":"error","code":404,"message":"Application not found","request_id":"..."}

Actual Behavior:

Production URL returns:

This site can’t be reached

Check if there is a typo in api.seamless.finance.

DNS_PROBE_FINISHED_NXDOMAIN

Test Commands:

- curl https://qall1k2j.up.railway.app/api/v1/health Works

- curl https://s1qn7c7z.up.railway.app/api/v1/health 404 error

Could you please help investigate why the production Railway URL is not routing to my deployed application?

Thank you!