Howdy Frank!
I think that will be an easy fix. If you go to WP Admin > Events > Venues, you should see a list of your venues/locations. Select the one used for that event and click edit. Now in the title are you should see:
Lehrstuhl für Umweltverfahrens– und Anlagentechnik <span class=”caps”>LUAT</span>
If you simply remove the HTML code it should be fixed. If you do not see the HTML code, then select over and delete everything in the title box, and retype it out. That should fix it.
Did that work? Do you have any further questions? Please let me know.
Cheers!
– Brook