Notifications not working on Whitelabel iOS Rocket.chat app - ios

So I am whitelabeling the Rocket.chat app for iOS. I have already done this for Android and it is working very well. The issue I'm having is that the app works on the simulator, but it does not receive any notifications. I have followed these instructions to no avail. It seems as if the app is not able to communicate with Firebase. Additionally, when I first launch the app after installing, it asks if I want to enable notifications, so the app itself is working. I'm really not sure what to try next. Thank you for your help. If you need any additional information, just let me know.

So the simulator cannot receive push notifications. Seems strange, but that was the problem.

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flutter ios app is not asking for notification permission

The ios app I made with flutter does not ask for notification permissions.
It wanted it in the first version of the app, but now it doesn't.
ios device setting:
apple developer console:
I am using firebase for notifications. When I did research on the subject, I saw that it was related to certificates, but I could not understand. I have not made such a setting for flutteer before. I'm waiting for your help
Fixed
I found the problem. I made a mistake where I asked for notification permission. flutter firebase permission
it got resolved when i followed the directive on this page again.

react-native-push-notification remote doesn't show when I test with real ios device with xcode

I'm using react-native-push-notification.
I'm trying to test push notifications, if I build app and upload it to testflight it shows remote notifications just fine, but when I do it with xcode build on a real device it doesn't react at all (I'm getting onRegister call and notification token though). This problem is only on IOS, android getting notifications in production and development. Can't google anything related so probably I'm missing something.
P.S. I'm using backend to send notifications through firebase
you have to go in capaibility in xcode and active PushNotification first
for more info see this
hope you have followed all the steps to get the APNS certificate and attached that to your xcode, before the build, if not please do so.
Also, in addition you need to have .pem file to add to your Firebase to make your ios app enable to send and receive push.

Notification status suddenly "undetermined" for all builds

I am building an ejected Expo app (React Native w/ ExpoKit), and have recently run into an issue with notifications. I had them working previously with no issue, but recently, that suddenly changed, even though I didn't change anything relating to the notifications. Note that I am only using local notifications.
Anytime I try to add a notification, I get an "undetermined" status code, thus I can't add register notifications. This happens in the simulator, app built on device, and app distributed through TestFlight.
I tried downloading an older app version from TestFlight that had worked no problem before, but now I get the "undetermined" code on that version to! Does this mean that my device is the issue?
Thanks for any help you can give.
I figured out the answer. I did not have push notification entitlement configured, and adding that seemed to fix the issue. I’m still unsure why it worked before and suddenly stopped though.

GCM push is not received on iPhone 7

My app uses GCM to send push notifications and it all worked great.
Recently, one of subdcribers bought iPhone 7 and wrote to me, that push notifications dont work.
I've checked the logs from GCM - message is sent correctly:
{"multicast_id":6854913573879465744,"success":1,"failure":0,"canonical_ids":0,"results":[{"message_id":"0:1484614306664165%6a57bb166a57bb16"}]}
She does receive other notifications from facebook, viber, etc., so no trouble with network.
Notifications are enabled in general and for my app.
"Do not disturb" is off.
Other subscribers with iOS 10.2 successfully receive notifications on their iPhones 5/6.
Reinstalling the app didnt help. App successfully receives the token, but doesnt receive notifications after.
What else can I check? Thank you.
I think this is a common issue on iPhone7. Check it here. I guess you have done all the workarounds in the link given but still no luck to fix the issue. Maybe this thread might help. Suggested action is to make sure that on your project settings, under the Capabilities Tab, scroll down to Push Notifications and turn it to ON. This automatically generates an entitlements file that contains the key APS Environment.

IOS9 Push notifications dialog appears after delete and launch app with xCode7

I have an application, it uses APNS, so I have code that subscribes to notifications, and everything works fine. But every time I reinstall app, and run it with xcode, I get allow push notification dialog. Every time.
I found hundreds questions about how to achieve this dialog again, but none - how to stop achieving them. I need help!
It's seems known IOS9 bug, here is a link for developer forum and still no response from apple and no solution:

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