Regarding the menu issue, do you mean that once you add something to your menu item to create a dropdown, it does not work for you?
Also, could you let me know what steps you take to add the link to the menu?
If you're comfortable with that, it would be really helpful to share the link to your store here so that I can take a closer look at your store myself and see the issue.
Thank you for the link - I am seeing the same. I am thinking that the Styles does not jump to another page to allow customers to click on it as a drop down only - would you be able to include a screenshot from the Navigation section in your admin where you set this up? If I can see the way you linked it I might be able to advise more from there!