Click on the settings and type 'Manage app’s battery usage' on the search bar. Then click on the 'choose apps' option. You will see a list of apps on the screen, click on myGate and choose the 'no restrictions' option. Then click the back button till you reach the home screen again.
Click on the settings again and type, 'Permissions' on the search bar. On the screen, you will be presented with a host of option, click on 'Auto-start'. You will then see a host of apps on the screen with a toggle button. Switch myGate on. Then again click the back button till you reach the home screen again.
Click on the settings again and type 'app notification'. Then choose myGate, and using the toggle button switch on the 'show notification' and 'priority' option.
Open the myGate app and immediately exit the app using the back button. You then click on the 'Recent apps' button, a button generally found on the bottom left most side of the phone with 3 horizontal lines. From there place your finger on the myGate app and pull in downward. You will be presented with two options, lock and info. Select lock and then press the back button.
Following these steps should be enable all the notifications on your phone, but in case you still do not get the notification, you could follow this advanced option.
For the last step, open the setting app again and select the “about phone” option, that is generally found towards the end. Then click on the “MIUI version” 8 times and go back to settings and select the “additional settings”. On clicking that you will find 'Developer options', click on that and select 'memory optimization' and turn it off. After that you will be asked to reboot the device and after that all your notification from myGate will be delivered.