Hm… It does not work in the app. I think accounts are different for the US and UK. I also found this thread in the forum. This may not work in the US because the web site is more limited. We can not see vehicle status information here or torn on the e.g. fan. This only works through the phone app. 
I tried changing "bmw-connecteddrive.co.uk " to “connecteddrive.bmwusa.com”.
I also tried changing the authenication server to “https://b2vapi.bmwgroup.us” based on this post.
I am happy to test more if needed… or if you have any other ideas 