I’m not quite sure what happened but Pulpconnection’s home page was showing a blank white screen for awhile. I don’t know if this was caused by the latest version of WordPress, v4.4, or the license for my theme expired. Or it could even be an incompatibility between the theme and WP 4.4. Whatever the cause may be, I temporarily switched themes to the included Twenty Sixteen. Pulpconnection showed posts once again, just in the Spartan look of the theme.
So now, I’m temporarily installing the Canvas theme and tweaking it. If this unusual behavior is due to an expired theme license, I’m bummed that’s how it works and may have to find a new theme that still behaves even though expired.