Menu flyouts not working in MS Edge

I am working on a site redesign and put quite a bit of effort into a School Zone. In MS Edge, the menu flyouts do not work, but they do in other browsers including the MS Edge beta which is based on Chromium.

Is there something that I might do to locate the issue with menu fly outs in Edge? I know it’s not a problem with other themes and believe that it wasn’t a problem when I began working on the site. I don’t want to start over with another theme. It’s not a problem for me personally because I can select a different browser, but visitors using edge will have a diminished experience.
Thanks

The page I need help with: [log in to see the link]