Bought custom domain, but Substack hasn't set it up hours later

I have a few publications on custom domains. They work great. However, my latest Substack publication's domain has not be setup by Substack. The DNS entries are configured correct but the publication's domain status is stuck on Domain verification:

https://preview.redd.it/yqlsvyp67eod1.png?width=1280&format=png&auto=webp&s=2e49ced277384cae9385acb666c11d1106c6cb7f

The result is my site is down now for hours.

I tried to contact Substack support, but you can only talk to AI now and the AI told me it could take 36 hours for someone to take a look at this, assuming it actually escalated it. The AI has escalated chats before, but I never heard back from a human.

If I don't hear back soon, I will have to abandon the domain change, and put my old site back in place as I can't be down for days waiting for this process to complete.

Anyone know what the issue might be and how I can get human help?

Thank you.