When you order a Sellvia Turnkey store and complete the survey, you will be provided a couple of options for your domain name that suit your niche. If you already have your own domain name that you want to use on this site, please let us know about it as soon as possible, as we will need you to set the NS records for your domain to our servers so we can work with it.
If you have an already running webstore and decide to change your domain name, note that if you are already running the promotion of your store, you should be prepared to set it up again. Make sure to consider SEO implications and potential traffic loss before making the change. Anyway, you should contact Sellvia support team to inform us about domain switching.