Hey @ricardol,
No, esp32-ble2mqtt doesn’t have something like that mac_type parameter. I couldn’t understand exactly what it does from the documentation.
Are you sure that the write command didn’t work? Maybe the payload was wrong and I missed something when converting it to decimal. I suggest moving this discussion to a Github ticket and I can try and help there. If you can also grab the logs while connecting to your treadmill and sending the write command, that would also help.
Good day