Settings > Notification & Status Bar > App notifications/Manage notifications, click Swoo and enable specific functions such as allowing notifications, lock screen, banner
Settings > App management > Apps/Auto launch and Associated launch > turn on for Swoo
Settings > Battery > turn off power saving mode
Long press on Swoo > App info > Battery usage > turn on Allow foreground activity and Allow background activity
Enter the multitasking interface, click the more icon in the upper right corner of Swoo, and click Lock