I think I was having the same issue.
The error in the javascript console is
input.min.js?ver=5.1.5:1 Uncaught TypeError: Cannot read property ‘Geocoder’ of undefined
I played around with the plugins on my site to see if it was something conflicting and it seems that in my case it was a plugin called DZS ZoomSounds (Used for an audio player).
I would recommend deactivating all your plugins apart from ACF and see if it works. Then re-activated the other plugins 1 at a time to find if something is conflicting.
