Translation of unused in German

If I wanted to integrate the above demo on our page, would we need to work with Vocabulix or do you have some other options? Could you send me some samples of other teachers, who integrated this demo?
We have an option of uploading an excel file. However, we do give this option only to institutions and schools. The other ideas may be given in the future too. Thanks a lot for a great feedback!
We could not find a nice hotel so we just took whatever we found in the center of town. We were a little upset with the entire stress, so that we had left our bags in the cab when it drove away.