@TL-Jay- Webflow is using https://letsencrypt.org/ certificates for SSL on your site. This offers an automated process for the creation of certificates for free. So there is no private key, private cert file for you to download and use. Most hosting providers do support LetsEncrypt on their servers. So you should be able to use that, if supported. If not, you would need to secure a new certificate from a public certificate authority, or generate your own self signed certificate (a self signed certificate would not be automatically trusted by browsers).