iCloud custom domain: Cloudflare 404-ing in setup process

Hi, when I click the final Continue button in the iCloud+ custom email domain setup, a new window is opened at the below Cloudflare address. However, this URL 404s (image at end of post).

How do I fix this? Or is this an issue on Apple’s end?

https://dash.cloudflare.com/domainconnect/v2/domainTemplates/providers/icloud.com/services/custom_email_domain/apply
?domain=paddymoran.com
&state={redacted}
&redirect_uri=https%3A%2F%2Fp71-maildomainws.icloud.com%2Fv1%2Fdomain%2FdomainConnectReply
&mx1_data=mx01.mail.icloud.com.
&mx2_data=mx02.mail.icloud.com.
&icloud_token={redacted}
&spf_data={redacted}
&dkim_host=sig1._domainkey
&dkim_data=sig1.dkim.paddymoran.com.at.icloudmailadmin.com.
&spfm_data=%22include%3Aicloud.com%22
&sig={redacted}
&key={redacted}

4 posts were merged into an existing topic: 404 error when trying to add domain to icloud