I have been hosting a web app for a few years in the North Central US data center. I want to move it to the Central US data center. I deleted the Web App in the North Central US data center, and created a new Web App in the Central US data center. I redeployed the code to the new Web App and modified the DNS entries at GoDaddy to point to the new Web App IP. However, when I attempt to add the custom domain to the new Web App, it fails with the error, "Failed to add hostname stonefinch.com. undefined"
I performed the same process for a separate Web App and it worked correctly, without issue.
Here is an image of the issue:
and here is an image of the validated custom domain, right before I hit the "add hostname" button: