unload event listeners

Hello, I just got the developer version of this plugin installed and upon running a google pagespeed insight and GTMetrix report they are saying there is an unload event listeners coming from this plugin which should be avoided. I am hoping this can be passed to the developers for further research. The report shows “https://real-id-flow.getverdict.com/assets/index.js?ver=137” as the URL with recommendation “The unload event does not fire reliably and listening for it can prevent browser optimizations like the Back-Forward Cache. Use pagehide or visibilitychange events instead.”