Hi @buildvet88,
By default, our installers, virtual machines and cloud images include a self signed certificate that you can use for testing purposes but won't be trusted by any browser. Also, according to the DNS checker linked below, your domain name doesn't point to any IP address.
https://www.whatsmydns.net/#A/buildvet.co.za
You will need to configure it in your DNS provider. You can get more information about how to configure a custom domain name with your server in the next guide
https://docs.bitnami.com/aws/faq/configuration/configure-custom-domain/