Hi @natanil!
The problem is connected with the update of Google Maps APIs Standard Plan. Now it has certain restrictions. Despite the fact we have already added Google API key for our Google Maps Easy plugin, since the large number of plugin users, we can simply exceed limits of map loads per day, therefore you may encounter with this problem. So to avoid this problem, we’ve added the option to use your own API key, you’ll find this option on Settings tab – http://prntscr.com/bymcar. To create you own API key – just follow this link – https://developers.google.com/maps/documentation/javascript/.
Also you can find more information in this article – http://supsystic.com/google-maps-api-key/