Clickfunnel domain not working

Hi, I have added my cname to target.clickfunnels.com but it says a domain already exists.

Can someone help me please, I have no idea how to verify the domain in click funnels.

Are you following this guide, https://help.clickfunnels.com/hc/en-us/articles/360005906094-Cloudflare-CNAME-Record?