[AC-6078] Can't send/receive push notification iOS

I've experienced issues with sending push notifications on other application, so I've created test-app with only push notifications functionality. I've set up everything according to guide, added my ios certificates in Mobile Backend Services (both dev and prod), tried to send push notification and it is displayed in push notifications logs, but device doesn't show anything, even thought in application logs it's written that it successfully subscribed to push notification and I can see device and it's token in "Devices tab" in admin panel (Mobile Backend Services). What could be the reason and how can I debug this issue? (in attachment I've removed keys from tiapp.xml, but I can provide you with it if needed) Thank you!