FirebaseInstanceID 2.0.3 推送通知似乎不起作用.它帮助我设置:pod 'FirebaseInstanceID', "2.0.0".也许下个版本会修复这个问题.

It appears that with FirebaseInstanceID 2.0.3 push notifications don't work. It helped me to set: pod 'FirebaseInstanceID', "2.0.0". Maybe in next version this will be fixed.