The default domain on SSL must be served on a domain that has a CNAME record. So, most likely, you'll need to set the full domain (www.yourdomain.com) as the default domain. To set the root domain as the default, check Setting the root domain as the default domain.

A site plan is the hosting plan for your site. You will need a Site plan for any website that you want to connect to a custom domain.

The root domain should have these two A-records:

• @ → 75.2.70.75
• @ → 99.83.190.102

The www subdomain should have this CNAME record:

• www → proxy-ssl.webflow.com

If you need a step-by-step tutorial on setting up your custom domain and DNS, see: Connect a custom domain.

This double www in the url error sometimes happens when a default domain ↗ is not set or the DNS records have not propagated fully. Giving it some time and publishing again usually solves this specific issue. Domain changes can take up to 48 hours to complete, and you may experience these intermittent www.www issues during the time that your domain name propagates.