[Plugin][SimpleMap] Markers Not Showing in Map

I’ve had SimpleMap installed on client’s site for a while now and it was working just fine. I went to the site recently to take a look at a few things, and to my surprise none of the markers were showing on the map. I upgraded the plug-in and tried flushing/re-importing the data, and nothing seems to have changed.

I went through the process of deactivating all of the plug-ins and reloading the the page (with the cache cleared).

Also, when you search for any of the stores, there are no search results at all.

I’m kind of at a loss on why this isn’t working. Any thoughts? Thanks in advance.