Hi ,
Very sorry for the late response , there is a designed BUG of the power supply we found .
The solution is that remove the C5 capacitor ,please kindly try to do that , and test the module again 
Regards,
Deray
Hi ,
Very sorry for the late response , there is a designed BUG of the power supply we found .
The solution is that remove the C5 capacitor ,please kindly try to do that , and test the module again
Regards,
Deray