No Bluetooth connection on nRF52833

Hi support team, 

I'm working with nRF52833 DK. installed the mobile app and desktop, but I wasn't able to connect to either.

Power switch ON, SW6 on DEFAULT. J2 connected to my laptop. LED1 is ON, and LED 5 blinking.

Do I need to any other setup or software for initial Bluetooth connection?

appreciate your help

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