Hi,
You can check which files are included in the LuCI.
In LuCI, go to System → Backup / Flash Firmware:
Under Configuration, click Open list... and confirm that /etc/AdGuardHome/config.yaml is included.
If you would like to include any additional files or directories, add their full paths to the list, one path per line, and then click Save.
For more detailed instructions, please refer to the following guide:
