KC868-HA-V21 serial port selector drop box freezing

[PeterOo]

Hi admin,
    when I click the serial port drop box, the app doesn't respond anything, it is freezing. I have already installed CH341 driver on my laptop for rs485 to usb config device. It showing the correct com port when I checked in device manager. But, I can't select the serial port in the app. I m using windows 11. Help me with that.

   

I m sure KC868-HA-V21 module is working normal. It is sending some data frame when I press k1 button in the serial monitor.

   

[admin]

i think maybe windows problem. can you run our software by administrator mode. close all firewall. or you can use another computer for a testing.

[PeterOo]

i think maybe windows problem. can you run our software by administrator mode. close all firewall. or you can use another computer for a testing.

Alright, will do it.