Mega Menu doesn't display on PC

I’ve created a mega menu and it works great on my Mac, but I cannot get it to display correctly on a PC.

http://72.29.80.176/~damaradayspa/

The Products & Services main menu item has a mega menu associated with it.

https://www.dropbox.com/s/dgxmf7bmvpvgnkr/screen_cap.tiff?dl=0

Please help, thanks

Paul

https://wordpress.org/plugins/jquery-mega-menu/