R_
Please provide your Plugin Environment and the site url so we can better assist you..(see posting guidelines at top of forum ) .
I do not know which versions you are using or if any add-ons…. There were some people who had lower PHP versions (not advised but I cant tell if this is you) that caused JSON issues, so you would have to update to current version to allow for a PHP v 5.2 for instance and you would need to update to SLP 4.4.37
If you have the latest version of SLP there is a setting under Experience/Map for a “Fallback” lat/long if the Google server is busy
Info about Geocoding Google API fail