Sub Menu not working in Responsive

Hi Guys,
I have had this little issue before and fixed it, but cant remember what I did..

The menu works fine in desktop view but when I go to responsive view the sub menus will not drop down. I have checked if there are any jQuery conflicts and they look ok.
Could you please see if you can work out what is happening.
I have also realised that this is occurring in a couple of other development sites that I am working on, so I will need to carry the fix through to them as well.

You can view it on http://ssa.virtualbean.com.au

Regards
Wayne Hines

Hi Wayne.
Thank you for using our product and feedback to me again.
Please give me link your site and your account of the administrator via mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
I will check and feedback it for you.

HI Wayne.
I fixed it for you on your site:
gason.com.au/eureka-home
because your site overrides our module. I add some code in custom CSS field.
@media screen and (max-width: 768px){
#jux_megamenucss3 .dropdown-menu {
display:block!important;
}
}

Hi Huyen,
Fantastic, thank you very much for getting this sorted so quickly.

Your service is 5 stars!!

Regards
Wayne

Hi Wayne,
Thanks you
Can I help me, write a review and vote 100point for each section for my product on JED:
extensions.joomla.org/extensions/extensi...oomla-css3-mega-menu
Thank your review.

Already Done!!!
Thanks Again

Hi Wayne,
Thanks your review.
But Your review doesn't displays on JED. Please check it again.
Thank you so much