Hello, I get this from the one.com support team:
this is not working into the site
One.com technical team says… for them it works fine, but the target site doesn’t seems to support loading via iframe - so you will have to use a webforward instead or check if webflow offers to add a domain name and redirect via DNS (A record/CNAME)
why is this not possible for webflow: because the logo is into the site for reclame…
thanks to help me