Unable to add custom domain to static web app

Question

I created a static web app in Azure and yesterday was able to go through the process of adding a custom domain to the app via this link:

https://learn.microsoft.com/en-us/azure/static-web-apps/custom-domain-external

I updated the DNS settings and CNAME at my registrars site and attempted to add the custom domain, however the validation kept failing so I decided to wait a day to see if the changes propogated out overnight however this morning the add however the add button is now disabled and a message reads

"You may experience reduced functionality due to missing access control permissions. "

But I checked IAM and I am a contributor to this resource.

Why am I not able to add custom domain all of the sudden?

Answer 1

I checked this morning and it looks like I now have the option to add a custom domain again:

I added a custom domain name as follows:

And clicked next

Now on this screen,

I check on my DNS Provider to make sure the CNAME is set up correctly, which it appears to be:

I click add:

The record indicates the DNS is validated:

I click close:

Then I receive this error:

Answer 2

Solved: It was an RBAC issue in my case.

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I'm still having the issue that I cannot add a custom domain for my static web app.

I'm the Subscription Administrator and have also added myself as admin to this resource.

Any help would be appreciated to get this fixed.