The issue with not immediately showing results should have been fixed in the latest widget pack, which is why I wanted to make sure you had that on the site before digging into this deeper.
The prior version required you turn on immediately show locations for the entire site. The new version turns it on as needed from the widget.
What is the radius you have set in your widget? It looks like 75 miles.
Is it big enough to bring up locations with your test address entered?
What is a test address/zip I can try at http://rollrite.com/ (that URL has the latest widget pack & SLP updates, correct?) ?