2-3 days here as well, including the replacement I needed. Support replies however were slow enough that I'd personally recommend you consider an ASR module instead. Theres a few here now with issues with the CETE.
Here is one UK supplier I found when I was looking:
https://automotivepassion.net/product/audi-valve-controller-s3-8vrs3-8vttrs/
Same here, carbon chin splitter ordered, great communication, very friendly and arrived next working day! Now to just clean the car and get if fitted.bought their front chin splitter as well as carbon mirror caps of these guys...top service