iOS Push Configuration
How to Get APNS(Apple Push Notification Service) push key in order to send iOS Push Notifications.
Go to https://developer.apple.com/.
Click on the Certificates, IDs & Profiles Tab.
Go to Keys tab and click the add button.
Select the Apple Push notification service checkbox, enter a key name, then hit continue
Click Register.
Take note of the Key ID, click Download and save the .p8 file to a secure location and then click done.
Now use this .p8 File, the Key ID and the Apple Developer Team ID on the Push Credentials page to set up iOS Push Notifications.