Dear customer,
Could you please try the following methods:
1.Create a guest network that only operates on 2.4G, and attempt to connect the Netro controller to this guest network.
2.Ensure that the router is not blocking the Netro device, and that it does not block port 1883 reserved for MQTT. You can also try lowering the security settings on the router/firewall.
3.Sometimes restarting the modem can also help.
If you have any further concerns or questions, please do not hesitate to reach out to us.
Regards,
Netro Support