What I noticed today is that the data is returned, but not available via REST API. I guess it’s because it’s protected. Can you please change it so that the data are available the same way as it is when one selects physical location?
I had the same problem, so I decided to see what console.log(wpcf7) would give me. And it turned out there is no method initForm. There’s just init. Because of that, please try replacing wpcf7.initForm() with wpcf7.init().
I just checked and other users have already translated the things I need, but the changes haven’t been approved yet. Some of them are like 11 months old.