It is imperative that the IP address points to your index.html page on the shopify site, if you are using shopfiy. However, if you have uploaded your site to Wix's cloud your index.html page will be on their servers and not shopify which is what missdivine.co.uk points to. That's why it doesn't work. To sort this out, contact Wix, to see where your code is. Hopefully you have your website code backed up on a local computer (i.e your PC, laptop external hard disk) just in case. HTH.