Same problem over here
I use Intergeo Maps since a few years. It was working very well, until now.
Since the update to V 2.3.0, Intergeo Maps isn’t working any more. It still shows the existing maps on the frontpages. But allays just the finest one. If there are more the one map, (e.g. in a category) all exempt the first are just white.
The backend itn’t working at all. I’m unable to create new maps or edit the existing. Intergeo Maps is just useless like this.
I’m on WP 5.1.1.
How long will it take to finish the next working update?
Pleas, move back to the old working release at the WP-Plugin-Page and WP-Update-System… Pleas, immediately undo the release this broken version 2.3.0!