Notifications on Huawei devices
Huawei devices have a special default mode that hinders applications from sending push notifications in order to save power. If you want to get EduPage notifications, you need to enable Edupage to run in background. Edupage does not perform any other actions in background apart from the notifications displayal. This means that it does not come to any data transfer or other processes that would negatively influence the battery life.
Settings -> Apps -> Notifications -> Allow notifications
Then it is needed to allow EduPage notifications in the Settings-> Advanced settings, select Battery manager/Protected apps and enable EduPage application.