Azure DNS API - Credentials dropdown blank

I have setup an Azure enterprise App and added it to the Stored Credentials
When I create a new wildcard cert I am unable to select the credential in the drop down when selecting dns validation.

The Azure app looks fine and I have the secret added to the Stored Credentials.
When I click ‘test’ I see the message ‘No test available’ it is not clear if this is normal.

Is it possible it’s been stored under the wrong category? If you click the “New” button next to the dropdown (resize window if you can’t see it) it should preset the correct category.

If it’s added as the correct category try restarting the app, it’s unusual that it wouldn’t refresh though.

If the problem persists try our new beta version (5.9.3) as this includes fixes for some dropdown related issues.