iMac and wordpress dashboard

Hello, I am using the Make theme for my website http://www.cheffavours.com.au I am definitely a beginner when it comes to WordPress and I have recently bought a new iMac desktop, I downloaded the WordPress app and I am having trouble editing the pages once I am logged in. Especially in the visual tab, it doesn’t show up how the images look on my actual website, it just shows the captions/links I have on them. Especially for this page http://www.cheffavours.com.au/chef-favours-client-photos/?frame-nonce=232ed248b9 It looks very different to when I worked on it with my old pc laptop. Also when I go to visit my website, the dashboard menu disappears so I can’t flick between editing pages if that makes sense. I would really appreciate any help anyone has with this. I am still learning everything with Mac, also if I am suppose to post this in another forum please let me know. Thank you for your time in advance Cheers Kirsty 🙂