Solved, the problem was the USB to micro USB cable .
Sure，CREATOR is a open source hardware,you can do every thing ,we provide the Arduino SDK.
But if you want to use RAK473, you have to use the development board : https://www.aliexpress.com/store/product/WisNode-UART-Open-Source-Hardware-module-development-board-compatible-Arduino-AT-command-communication-and-network-configuration/2805180_32789820244.html?spm=2114.120106188.8.131.52bdadf47T56O8i, CREATOR does not support RAK473. The hardware they use is the same, but the software is different.
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