Have you called UIApplication.shared.beginReceivingRemoteControlEvents() before your audio starts playing?

I'm having similar issues, although maybe slightly different. Deep links are opening fine, but when I send a notification from Airship it launches the app and then immediately launches Safari with the url I sent. However the app banner shows in Safari and if I tap OPEN it will open my app to the page I expected from the url in the notification.

Did you figure this out? From what I can tell you either want "appIDs": ["JJVFBTPSYV.com.italictype.Italic-Type"] OR "appID": "JJVFBTPSYV.com.italictype.Italic-Type" I see the plural/array more often. But I'm not sure because mine also isn't working.