It is possible to automatically create a correct DNS record for your domain, if you have Cloudflare enabled in your account and if that domain exists in your Cloudflare account.

All you have to do is fill in your Cloudflare email address & API key at your profile page: https://ploi.io/profile/integrations

Next once you create a site, with staging, it will automatically create the DNS record for you pointing to the correct server.