Here are the search results when searching by zip code, using a Massachusetts zip code and selecting 500km from drop down it returned 7 locations .I then searched with drop down of NB (New Brunswick) and the results returned are shown.
If you are referring to the map markers showing, you might want to check those, some of your map markers either aren’t appearing or because of the map configuration are on top of each other. Refer to how to set custom map markers.
If these are not the results you expected double check your settings under Results tab in SLP panel and make sure you have set a large enough number to return and to cast out to . Also fetch your Google API browser (server) key at the very least. contact sales if you are thinking of switching over to MySLP (managed service where we take care of the keys)