Ready to post? 
First try seTenant:
dev-7le8bqw28ozr5wkb
Custom domain:
Custom domain ID:
cd_qIPCv6BuH769LnoR
Type:
auth0_managed_certs
Expected CNAME:
dev-7le8bqw28ozr5wkb-cd-qipcv6buh7691nor.edge.tenants.us.auth0.com
DNS verification:
Google DNS (8.8.8.8) resolves CNAME correctly
Cloudflare DNS (1.1.1.1) resolves CNAME correctly
Management API:
status = pending_verification
verification.status = pending
POST:
/api/v2/custom-domains/cd_qIPCv6BuH769LnoR/verify
returns HTTP 200, but domain remains pending_verification.
No verification.error_msg is returned.arching for your answer.