I am currently experiencing issues with SSL encryption especially with your plugins content. As you know google now ranks sites with SSL more favorably than non encrypted sites.
according to page loads a number of elements used in the Ajax Search pro transfer over non encrypted connections. we wish to change this to encrypted elements.
Please try to save the search settings for each search instance you have. It will re-create the css files with the correct site url. (if the site url is set properly in wordpress)