Ionic Push Notification not working

I am currently working on an Ionic project and I have tried adding Push Notification in the app but it’s not working.

I have tried PushPlugin, ngCordova but none of the frameworks are generating the tokens. Ionic does generate the tokens but when dev_push mode is set to false and it generates every time the app opens. Which shouldn’t be happening.

Can anyone please suggest what can be done from here?

Regards,
Umang Pandya