Rollover Dropdown Menu Doesn't Show

I’m using the UniSphere Vision theme and have issues with the menus.

#1, going into the theme menu on the dashboard, then general settings, “Header Navigation Excluded” page boxes that I have checked do not correspond with what is shown on the published site, pages checked so they are excluded still show on the site.

#2 Submenus that usually dropdown when the mouse rolls over the main header menus just don’t show. They are indicated through the “Parent” system when uploading – and I have another site in the Vision Theme whre it works perfectly, so I do know how to do it, but on this site they are not shown when I hover over the menu.

#3 Is it possible to adjust the link / menu colour away from the vibrant pink??

Any help gratefully appreciated.