Brian, There isn’t a 4.4.02 Enhanced Results, it stopped at 4.3.02, assume you meant that,any newer version is now incorporated in the 4.4 Experience add-on.
ProPack is 4.4 and WP is 4.4.1 , don’t know if that will resolve your issue, but you may want to update WordPress and your addons
I cannot replicate your issue, when I change mine to “try again” it displayed if no results as “try again” ,
I inspected the link you provided is there some special js coding in your theme that would override the No results label?
Update your add-ons and double check to make sure you do not have any conflict with your theme and the SLP plugins, also check your plugin style.