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The module should be programmed with EZ-Serial and with a static random mac address. As the CYBT-353027 module is newly released, the ez-serial may not be programmed. The mac address "20:70:6A:20:XX:XX" is just for test in the factory. You need to programm a new mac address.
You can either apply a new mac address in the IEEE website or just use a static random mac address.