Could you provide a screenshot of your plugin environment with your site url? ( See Posting Guidelines)
Do you have ProPAck installed?
i.e. if you click on the question mark under the Tagalong show legends info :
:When enabled text will appear under each Tagalong icon in the legend. Add legend to the output with the [tagalong legend] shortcode via the Pro Pack view setting.Under the User Experience / View tab.”