Just to be sure, who created the invite? A German native speaker by chance?
The first page of results when I deliberately google in English “what is a Jour Fixe” are the following:
- Blog entry in English written by someone from a Liechtensteiner Organisation
- Blog entry in English written about the German usage of the Term
- English Wiktionary entry
- German Wikipedia article
- Blog entry in English written by someone from a German Organisation
- Translation website treating it as a German term
- Blog entry in English written by someone from Austria
- Translation website treating it as a German term
- Blog entry in German
- Blog entry in German
Some of that may be personalized to me as a Swiss user of course. But it seems a bit much to be a coincidence. Maybe it is a loan word making its way from German into English now.
Just send the robot instead!