Hi Naveen,

From the screenshot, the app is launching correctly, but it's failing during the initial connection to the Mendix Runtime. This usually means the app was built successfully, but it cannot reach the configured Runtime URL after installation.

A few things I'd check:

• Verify that the Production environment is running and accessible.
• Make sure the Runtime URL configured during the Native Builder/App Store build points to the correct production environment.
• Check that the production URL is reachable over HTTPS and that the SSL certificate is valid.
• If the app works with a locally installed release build but not the App Store version, rebuild it after verifying the Runtime URL configuration.

Could you also confirm whether this issue in both iOS or Android, and whether it happens only with the App Store build?

Kindly mark this as the accepted answer if it helps.