When running v14 (on Windows) we used IIS and kept our LetsEncrypt cert updated automatically (voice.mydomain.com). When transitioning to v15, we used that cert during the install not realizing that IIS was replaced with nginx. Well, our cert expired today and I am stuck with no way to renew it. Nginx is hoarding port 80 and 443 and so I can't do my renewal. Is there a way to leverage nginx to update my cert so I don't have to buy one? Or can anyone think of a clever way to get around this problem?