I've decided to remove my 980 ti from the Azure build and to my surprize I've received a refund of 487£ when it should be more like 569£ and honestly I got tyred to call them every time and get charged like 10£ waiting for someone to pick up and help me. I changed the motherboard a few days ago...
this is what I mean when I say disappointing, what's funny is the fact that you can still buy that RAM but not with this system because all z170 motherboards have the same compatibility problem, but I do not see the reason behind the reply.