SAM D21J18 Xplained Pro, CDC demo from START is not working

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I have SAMD21J18 Xplained Pro

I went to USB CDC ECHO demo via Atmel Start and exported the code.

After install and run, it did not work.

Window see the USB connection (COM11) but did not echo.

I placed the breakpoint in BULK IN and BULK OUT and it did not response to message when I type ==\n