In some cases, particularly on Android 16 or with certain versions of Shizuku, the start.sh script runs and exits with code 0 (success), but the Shizuku service is not actually running. The script seems to kill the old process but fails to start a new one.
Permission denied
Open the Shizuku mobile application first. This generates the necessary system storage paths. Make sure you are using the official version downloaded from the Shizuku GitHub Repository or Google Play. In some cases, particularly on Android 16 or