Translation of Vortrieb

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.
I met the company last autumn, because the site's traffic is getting pretty big and they invited me to a workshop. They have convinced me that I have to put their logo at the top of the page to maximize exposure and this was a big mistake.
I am also your friend now, how nice is that. I am learning English for a year. I love this language. I already can speak Spanish, because my mother is from Mexico. Your German is really well!