Shopify App Bridge React: NavMenu is not working

[logicsarcade]

I have created an app and host my app on ngrok. And used Shopify App Bridge React in my app to show NavMenu but when I used a live server to host my app for the purpose of submission the Shopify App Bridge React stopped to work and now NavMenu is not working,

I have added my Api Key in the meta tag in html>head and added script too. Below is the screenshot.

In this screenshot easily can be seen the script tag and the Api Key.

Is there anyone who can help me out, what possible problem can be here?