Hey Dmitry,
I'm trying to add a Google Map on another site with your solution.
So I installed ZH and updated it from Joomla Back Office.
I created a new API key from Google (it seems their interface and process are just getting worse and worse… Even just getting a key took me hours ! Very confusing).
Then I entered the same parameters I'm using in ZH for the other site (which works) except I'm using the new key of course (a key without restrictions).
Within the Component itself, the map appears as a preview. But on the front side, the map doesn't appear. What's "funny" here is that I get the opposite issue than the one I got before : no map, but the zone is clearly defined, and I get the dark layer and the mouse wheel message.
Here is a copy of the console message I get.
Any idea of what could go wrong here ?
Many thanks for your help !