Still supported?

Is this plugin still supported? If so, I’m having a weird error with IE 9 and below. SOME of the multiple Sidebars I’ve created are not applying the skin from an accordion menu widget I’m also using. But only the ones created after a certain date. I checked the log and did no updates that day to the plugin, wordpress or jQuery itself. The code is identical. I can’t post a link as it’s still on our dev server but I’ve narrowed the error down to something with this plugin. Not the wp built menu or the accordion menu plugin.

Any ideas site unseen?

https://wordpress.org/plugins/multiple-sidebars/