Backend problem – edits don't save

Since the last update (with the forced Google API connection)
I can’t edit the maps anymore. No matter which browser I use, the “save” button does not function.

Adding a new map is no alternative, because the maps aren’t displayed in the page’s backend anymore. Also selecting a new POI isn’t possible.

https://www.ads-software.com/plugins/mappress-google-maps-for-wordpress/