Issue with new Saturn 4 Ultra 16k

I just bought a Saturn 4 Ultra 16k (my first 3d printer ever), and wanted to try i out for the first time. So I followed all the setup procedures and chose the test-print from the usb-stick.

However, my printer keeps rebooting. It will lower the plate into the resin, a few seconds will go by and the printer will roboot.

What am I doing wrong?