How to SSL Wildcard on Webflow so Subdomain Cloudflare works?

Hello Webflow readers,

I have partially succesfully connected Cloufflare with our Webflow website: symson,com.
The problem is that as soon as I change our nameservers to nova.ns.cloudflare,com only symson,com works and our customer log-in subdomains like vink.symson,com not. How come?

Cloudflare shows this image:


They say that Cloudflare is configured properly and that the problem is in a SSL Wildcard, like *.symson,com That wildcard needs to get installed on the webhost, Webflow. Where and how can I do that or does someone else know how to fix this problem?

Ronald

Does someone has an answer?