See if this tool will read your cluster, im not sure it will but if it does, there must be a immo off trick in the cluster, if it reads post the file, there is a lot of immo experts on
http://www.digital-kaos.co.uk/, i suggest you try there maybe, but good to hear you got it sorted with key pairing
VAGeeprom Programer (cluster tool)
https://ufile.io/f18bz