MSP430FR2633: UART communication issue

Part Number:MSP430FR2633

hi,

I am experiencing strange issue on the using MSP430FR2633 with Wisol sigfox module.

When I try to using USB2UART cable directly to talk to wisol sigfox module. I am able to get a response.  

But when i configured my MSP430FR2633 with same baud rate at 9600. i always get Error: parse error return from wisol sigfox module. 

By looking at the Transmit code, i am able to see AT/r/n actually sent out to wisol module correctly. But why it behave differently from the direct USB2UART cable which the input code AT/r/n is the same? 

Best regards,

kpk