@ mustermann
First, I was able to identify the CSS issue with the category drop down. Please download cMap again from your purchase history. Deactivate the current version and then install the newly downloaded version. You might have to force refresh your browser and server cache in order for the updated CSS file to be used.
Back to the map…
Adding “?ao_noptimize=1” to the map link will not fix the issue because that is way too late to have any effect on Autoptimize. So that is not a solution.
I have never used Autoptimize so I can not tell you how to set it up to exclude scripts Maybe Frank can help with that.
Now, I can tell you what the issue is. Scripts often need to be loaded in a specific order, this is called dependencies. This is something that WordPress manages. The dependency order is something I think Autoptimize respects when minifying scripts, but I am not certain, Frank would have to confirm. What is happening or seems to be happening when Autoptimize is enabled is that the scripts for cMap is not loaded in the correct order, I think. I say this because there error being reported by the browser is that the script in cMap that renders the map is failing because the Google Maps API is not being loaded before the cMap script. This is the order the scripts need to be loaded for cMap:
https://maps.googleapis.com/maps/api/js?libraries=geometry&sensor=false
https://oldtimer-veranstaltung.de/service/wp-content/plugins/connections/vendor/chosen/chosen.jquery.min.js
https://oldtimer-veranstaltung.de/service/wp-content/plugins/connections/vendor/jquery-gomap/jquery.gomap-1.3.2.min.js
https://oldtimer-veranstaltung.de/service/wp-content/plugins/connections-cmap/cmap.min.js
If Autoptimize an option to all a specific an order, i suggest trying that.
If all else fails… if Autoptimize has a settings to deactivate per page, set it up so it is not run on this page.
I did test Connections and cMap with Autoptimize and it works fine for me So there must be something unique to your setup that is breaking it. As Frank can tell you, all to often when scripts are minimized and concatenated can lead to issues because not all plugins scripts are, for a lack of a better term, compatible. The script for both cMap and Connections should always just working in this type of setup.
Hope that helps.