Why can't others send WeChat when glory 50se mobile phone locks the screen?

Glory 50se mobile phone lock screen. Why can't others send WeChat because the switch is off?

Huawei's mobile phone can't receive SMS, which may be that the self-start switch of WeChat is turned off. After the phone locks the screen, the system will close the WeChat APP.

We can turn on the WeChat self-start switch in the settings. Enter phone settings, and then click Application Management. In application management, find the WeChat app and click Enter. Click the permissions in the WeChat application information. There is no software self-start switch in the application permission interface. Let's click Set Single Permission. Finally, just turn on the application self-start switch.