I have multiple sites on Cloudflare. Cloudflare would periodically change the IP address of *one* of the sites. Each time, Wordfence would alert me, so I'd check Cloudflare's IP address range list and find it to be legitimate. So I'd click the "I know about this change" and the alert would go away. You shouldn't have to click either of your bracketed links, as they're a global CLEAR. I clear one issue at a time when they pop up.
Now to be safe, check the Ignored Issues tab to see if there's anything there.
Go ahead and leave the scan option on if you don't mind the DNS alerts.