H, @kevin-johar. Thank you for confirming the issue is now resolved.
My best guess as to why it took time to work properly is that there was a delay in updating DNS records caused by caching. There is a support guide with more information about that here:
Note, that DNS caching behavior is universal to all DNS services. It is not something specific to Netlify.
However, that is only a guess and I’m glad it’s working now.