Hi, I'm a beginner in working with these Nordic Development Kits. I've been following the steps outlined on the Nordic website for getting started with a nRF52840 DK. It tells me that after I've connected the DK to the PC and turned it on, LED 1 should start pulsating and the other LEDs will turn on depending on which button I press. However, no LED is flashing. The website accounted for that and told me to click on a link for further instructions. However, the link takes me to the page shown below. It doesn't contain any clear instructions. So I am confused on what to do. My research tells me I need to reprogram the factory example code into the flash, but I don't know how to do that. Any help would be great. Thank you!