Hello, Bob49p ,
Yep, we have an idea.
Most likely you download the application from Google Play store on your Huawei.
The fact is that in order for notifications to arrive correctly on Huawei phones, it is necessary to install the Ruhavik application from the Huawei App Gallery.
The bottom line is that each application store has its own notification servers, so install the application from the priority market for your smartphone.