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nRF9160 DK Led 3 constantly on

I've followed the procedure on the nRF connect cloud to verify the SIM card and add the LTE device, only once the LED3 and LED4 blink at the same time like it was connected, however, following the procedure to add the device (button/switch combination) didn't do anything. When I reset the board, the LED3 start blinking until it goes constantly ON and stays there forever. 

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