① 装不上 / App not installed
If you see "App blocked to protect your device" or the app won't install, Google Play Protect is blocking it. To fix:
1. Open Settings → Google → Google Play Protect
2. Turn OFF "Scan apps with Play Protect"
3. Open the APK file again and install
② 打开通知权限
After installing, open the app and turn ON all three switches on the permissions screen:
- Read SMS
- Receive SMS
- Notifications (important, otherwise no alerts)