Customizer > General Options has no Google Map API set

Please tell me how to block your Google Map settings in case it's stopping the plugin from working.

I have a huge problem. I've tried and tried to use a plugin that requires an API for Google maps...but it says the info has been entered twice. Is there a setting on your theme that has a Google API in it that could be clashing with the plugin? I really need to sort this urgently - thanks.