Not much we can do on our side. Suggest you do the standard things first like flushing your DNS on your WiFi, your browser and your computer. Then next thing of course your domain registrar would tell you to wait up to 72 hours for the DNS to propagate first. Hopefully you're using the right name servers too at your Domain Registrar.
ns1.gigasite.co.uk
ns2.gigasite.co.uk