On QGIS 3.2 I add, through the XYZ Tiles tab in the browser, this URL:
All that is displayed when it is added as a layer is a page of postage stamp size (5x5) pictures of the entire world. Moving or zooming simply refreshes the same view of a 5x5 squares of the world. I've tried this a number of ways and all FAIL. Any suggestions would be helpful.
The goal is to have USGS Topo Maps as a base map.