Huawei can no longer use Google services as a result of the US blacklisting Huawei. Therefore, Google Play is not available to download the Timesheet Mobile App.
Alternatively, you can download the Timesheet Mobile app from https://apkpure.com/employee-time-clock-w-gps-scheduling-messaging/com.timesheetmobile/versions
Apkure is a free site and has many advertisements. Please be sure to click on the correct Download APK button. See below.