//
//  NotificationService.swift
//  WonderPushNotificationServiceExtension
//
//  Created by Stéphane JAIS on 09/03/2021.
//  Copyright © 2021 WonderPush. All rights reserved.
//

import WonderPushExtension

class NotificationService: WPNotificationServiceExtension {
    override class func clientId() -> String {
        return "ENTER_CLIENT_ID"
    }
    override class func clientSecret() -> String {

        return "ENTER_CLIENT_SECRET"

    }

}

//
//  NotificationService.swift
//  WonderPushNotificationServiceExtension
//
//  Created by Stéphane JAIS on 09/03/2021.
//  Copyright © 2021 WonderPush. All rights reserved.
//

import WonderPushExtension

class NotificationService: WPNotificationServiceExtension {
    override class func clientId() -> String {
        return "YOUR_CLIENT_ID"
    }
    override class func clientSecret() -> String {

        return "YOUR_CLIENT_SECRET"

    }

}

--- 
+++ 
@@ -10,11 +10,11 @@
 
 class NotificationService: WPNotificationServiceExtension {
     override class func clientId() -> String {
-        return "YOUR_CLIENT_ID"
+        return "ENTER_CLIENT_ID"
     }
     override class func clientSecret() -> String {
 
-        return "YOUR_CLIENT_SECRET"
+        return "ENTER_CLIENT_SECRET"
 
     }
 
Change placeholder to match the one in AppDelegate.m
