Verb conjugation of "curve" in English

The billing of additional working hours is not justified, since it was our request to download the software and wait for the new version. They have admitted the error of the translation.
Somehow, my email was not sent. There were even a few mistakes, but really only minor things, nothing really bad. I've already read some other texts that you have sent and are getting better each time.
What kind of movies do you prefer? Anyway, should I write you to your email, vocabulix inbox, regular mail? I'm living in the North of the U.S., near the Canadian border. Have you ever been here?