Hello m8,
As stated in the return email, you need to have the correct ECU hardware to match what you had prior. I wont take a risk remapping a 018R 0261204673 to be used to replace an 018CG 0261200518. if you get another 018CG I am willing to help you, but I wont risk damage to your engine which would result in my name being dragged through the mud. If a jobs worth doing its worth doing right.
I will take a look at your naffed 018R and see if I can fix it for you.
The are two software revisions for the 018R and even getting them wrong on the "right" ecu for the car will cause issues.
Nick