If you have the Power add-on using the import function and your csv file is incorrect, or your header rows are not accurate, or they have wrong field names, the columns may be misaligned and the data field for an address could not import and/or does not geocode. Check your import message log.
Google does not recognize an address. See FAQ post
A. If you are moving something like a staging/test site to a new site and want to bring everything over intact , the Store Locator Plus author strongly recommends looking into the WordPress backup tool Vault Press, or better , Jet Pack. One of the features included , besides real-time incremental backups of your site with restore points, is the ability to restore the site to an alternate site.
SLP plugin/ Settings /Map selections will determine the Map layout , display, and focus of the map. The settings contained in the map panel will change the functionality (map domain, zoom) and appearance of the map and provides an array of selections to choose from such as, Google Map domains,language and additional functionality. If you need additional functionality or Map Layout , you may wish to review the Experience for WPSLP or Professional for MySLP or Premier/Enterprise options). Note that your Plug-in style selection will also impact how the map is displayed on your site.Plugin styles can be selected under Settings/View
The following settings are available to manage functionality.
Center Map: This is where you enter an address, or a state, or a location or even a specific latitude and longitude to be displayed as the initial focus for the Map. If nothing is entered in this box , the default will be the center of the country of the Map domain selected. For example if you have selected the United States Google map domain then the center of your map will be somewhere in Kansas.
Center Latitude Fallback: Center Longitude Fallback: These are the latitude/longitude settings that will be called if the Google server is “busy” or offline and not able to geocode or “call” to load your locations. If you reset to blank it will fill in with the Center latitude/longitude of the map domain you have chosen. You can have a different Lat/long fallback then your map domain or the center map if you so choose. If you do not add anything it will automatically fill with one of the two options described. An image of your fallback will also be displayed (version 4.9+)