G’day Nazar,
I can see the code in the page where the maps should be, but for some reason your website isn’t loading the Google Maps API script or my plugin’s script. My best guess is that another plugin is deregistering the “google-maps” script, which would stop my plugin’s script loading too.
I tested with SiteOrigin Widgets Bundle since I can see that on your website, but it doesn’t seem to be that one. Do you have other Google Maps plugins installed / activated? If so, try deactivating them all and see if one of them is doing this. It could also be your theme if that supports Google Maps, so perhaps try switching to twentyfifteen and see what happens.
cheers,
Ross