Aircon saga, wrong fitting

[Goran]

Went back today to ATS Euromaster in the hope to finally get my aircon recharged, but they couldn't do it. Apparently my car has the wrong service vent. They only have one type, with no thread, like a bicycle pump. On my car he service port is threaded. They say must be a European type port, never seen it before. So I can't use the Groupon, have to go to Audi after all.
Have you encountered this problem before? Does your D2 service port look like this?
I can't believe the LHD cars would have a different service port?