MQTT connection issue between BX310x and Azure IoT Hub (password length limit)

I want to connect BX3105 module to IoT Hub in Azure by MQTT.

There is no problem with the username, but if the password exceeds 60 bytes, an error is returned.
The password I am going to use is 147 bytes. The password, the SharedAccessSignature (SAS) itself, is originally long. The format is as follows.


The firmware version is BX310x.2.7.2.
It is set by AT+KMQTTCFG command.
Is there any way to solve this situation?

Thanks in advance for your reply.