Huawei devices are unable to receive push notification in the Microsoft Authenticator app. In order to deliver push notifications, Microsoft relies on Google push notifications service to end user who own Android/Huawei devices.
Google no longer supports push notifications to those devices and therefore we are unable to deliver push notifications on these devices.
So, in devices where OS push notifications aren't supported, it won't work.
This was cited from a similar question answered here:
https://learn.microsoft.com/en-us/answers/questions/1655077/huawei-phone-for-authenticator
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Regards,
Abiola