Find a professional web designer in Mona Vale

Hi, I need help with some issues I have experienced editing my website. The developer has closed the business, and we haven't updated it in years. I logged into our WordPress administrator and found that a few features we used to have are now gone. This developer created the template used, and I cannot find a way to publish new pages. I would like to maintain the website's appearance for the time being, but I need to add some extra content. Our website is www.beachhousesaustralia.com.au and www.bhau.com.au (both feed to the same website). As you can see, the FAQ content has disappeared, as have the contact us and the photo slider on the Project page. The functionality of creating slide images has also gone from our WordPress builder. Is this something you could help me with? Kind Regards, Ana