Subdomain site + SSL?

Can’t enable SSL for (custom) subdomain in Webflow. I have my webflow site in address https://portal.kohernt.io but I get “your connection is not private” error in browser. When I click the info on certificate the subject line in certificate is “webflow.io”. I have tried everything to solve this problem.

Found solution: you need to have in your CNAME record proxy-ssl.webflow.com (not proxy.webflow.com)