Menu is no longer on top bar.

My menu of pages, on both desktop and mobile, looked great until recently. Suddenly – the menu has changed and went into the slider on the main page and blog page. Thus – you cannot really see it very well and you can’t really see it all on mobile phone.

How can I get my MENU back on the top bar above the page content itself? I never changed the format – so I assume a plug-in (possibly SEO by Yoast) made it change?

Please advise. For an example – you can visit the site itself at http://www.eastcoastvegas.com.

Thanks!