Menu dropdown not working – Alchemist theme

Hi on my site - laxfederation.com on the desktop when you go to click on the top menu and click the sub-menu tabs it disappears and is very hard/annoying to be able to click the sub-menu when they disappear so quickly. Does anyone know how to fix it? - i see that it uses mega menu but dont see the plugin on site so im guessing alchemist has it build into the theme.