Case 1: Due to Cloudflare.
If you are using Cloudflare and Push notification is not working in AMP then you need to “TURN OFF” the option of Rocket Loader.
Step 1: Click on the “Speed” option.
Step 2: In Rocket Loader option you need to “TURN OFF” this option
Now your issue successfully solve.
Case 2: Due to Cors Policy in IOS
When Push Notification is not showing in IOS then the error will be displayed in the console like below the screenshot
Allow CORS Policy on your server if you don’t know how to do this then contact your hosting provider to enable it.
That’s it for this tutorial!
We hope it helped you. If you have any feedback or questions, then please share them in the comments section below.