Problems with MQTT connection with Shelly

[Smarthouse]

Hi,
I am a new user of Domoticz, so I kindly ask for help with this issue:
I installed the Python MQTT Shelly plugin to Domoticz.
I also set up the MQTT broker using Mosquitto.
Shelly is also configured and connected.

The problem is the plugin didn't create the devices, I assume it didn't receive mqtt load.

I attached the logs.

What may cause such a problem?

[Dnpwwo]

Check under 'Settings' to make sure that 'Accept new Hardware Devices' is enabled

[iosamu87]

did you solve the problem with the flag?

because I also have the same problem with the fleg enabled.

I wonder why I can't create the device.

[iosamu87]

/var/log/mosquitto/mosquitto.log ( something comes... )
2022-01-25T13:03:06: New connection from IP:30372 on port 1883.
2022-01-25T13:03:06: Client shellydw2-XXX already connected, closing old connection.
2022-01-25T13:03:06: New client connected from IP:30372 as shellydw2-XXX (p2, c1, k60, u'mqtt').
2022-01-25T13:03:37: New connection from IP:20647 on port 1883.
2022-01-25T13:03:37: Client shellydw2-XXX already connected, closing old connection.
2022-01-25T13:03:37: New client connected from IP:20647 as shellydw2-XXX (p2, c1, k60, u'mqtt').
2022-01-25T13:04:21: Client Domoticz_XXX closed its connection.

while on domoticz I don't see anything and it doesn't create the device.

any suggestions ? thank you.