Communication Services: Email DKIM Verification Stuck — Ongoing Issue

Have posted this here already and saw a response that an engineer will need to look at it, but heard nothing more. This is still an issue

Problem description

I am experiencing an issue where the DKIM verification for my custom domain in Azure Communication Services Email remains stuck at 'Verification in progress', despite the DNS records being correctly configured and publicly resolvable.

Environment

Azure Communication Services Email with an associated Communication Services resource; custom email domain hosted in public DNS.

What I've already tried

I checked the public DNS resolution for the DKIM selector CNAME records using public DNS resolvers; both records are resolvable and match the Azure Portal targets. I verified that the domain ownership, SPF, and DKIM2 are verified, while DKIM1 is still in 'Verification in progress'. I confirmed the authoritative DNS records for the selectors match the expected values. I also checked the DNS records' creation and update times; records were created during setup and have not been altered since, with no proxy or flattening enabled.

Current status

I am seeking assistance to understand why the DKIM1 verification remains pending despite correct DNS configuration, and to explore steps to resolve this backend verification issue.