Hi Cristiano,
looking through the screenshots, it looks as if everything is fine.
I have this motherboard, but with an 1800X CPU and I was able to set my RAM speed using XMP Profile. Were you unable to do this with your RAM kit?
When it comes to capturing BIOS screenshots, make sure that you have not disabled the USB ports in the BIOS. This can happen if you have set fast or ultra fast BOOT as certain items are disabled until the Operating System loads to speed up this process. Also, make sure that your USB pendrive is plugged into one of the USB ports on the back panel of the motherboard, rather than via a USB socket running off of one of the motherboard headers. The pendrive needs to be formatted as FAT32 and, if everything is recognised OK in BIOS, pressing the F12 key will capture the screen and save it to the pendrive.