Unified push Incoming call not come

Steps to reproduce

1. Mobile Device Huawei without GAPS, Huawei Y7P 2017
2. Mobile app last version from f-droid
3. Nextcloud talk last version
4. Mobile Unified push client (sunup, ntfy.sh)
5. Audio/Video call from any other user on same server

Expected behaviour

Incoming Call banner on display.

Actual behaviour

Nothing is happening.
If the device's screen is off, there's no incoming call notification. Just turn on the screen, even without unlocking the device, and the call comes through.
I'm using Unified Push, and incoming message notifications come through normally even with the screen off and the device locked. On a Xiaomi, with the same settings, calls come through normally.

Device brand and model

Huawei Y7P 2017

Android version

10

Nextcloud Talk app version

24.0.2

Nextcloud server version

34.0.3

Talk version

24.0.4

Custom Signaling server configured

Yes (specify version in Additional Information)

Custom TURN server configured

Yes

Custom STUN server configured

Yes

Android logs

No response

Server log

Additional information

No response

Start by reproducing the call on a Huawei Y7P 2017 running Android 10 with Unified Push, comparing the screen-on and screen-off states. Inspect the Android notification and call-handling paths and collect logs, which are not included in the report. Done means an incoming call banner appears while the device is locked and the screen is off.