I just did a RMA of my 2700x and it went through fine. Though this reply is months later I figured it'd put the information out there. My problem is getting the status of said RMA. I believe the language barrier is what's causing this, which I don't understand because they are using auto generated emails (so figuring out the correct language shouldn't be an issue). B
Did you get your RMA to go through? How long did it take?
if someone else comes across this just getting the # directly from the top of the processor worked fine. Maybe you need to make sure you check the correct version? Processor in a box etc?