Hello,
System language is Dutch.
The adress format is:

It is grey, but after Thuis: it is,
Street (street)
postcode (postalcode) plaats (place)
That is the correct format: first pc the place.
I have tried other app's to extract contacts form Apple Contact and the do not switch pc and place.
I know Google Contact is a little bit messy with contact formats and that is why I made the contacts for SubTotal not in Google Contacts but in Apple Contacts; saved in iCloud. So everything is made and used in the Apple universe.
BTW there is also a problem with picking the name (first line) from Apple Contacts.
So: conclusion, not flawless cooperation between SubTotal and native Apple apps. That is common in the Apple universe. I will not use Apple Contacts.