The primary domain on my Vercel account is www.finbudtechnologies.com. I set another domain finbudtechnologies.com which redirects to www.finbudtechnologies.com. The problem is that despite everything being correctly configured, when I visit finbudtechnologies.com, it does not redirect to www.finbudtechnologies.com except when I use Starlink as my network service provider.
Note that it has been more than three months since I did this configuration, so it is more than enough time for the DNS to have been fully propagated across all the Networks.
Please, also note that some of my colleagues are having this same issue with their Vercel account so I suspect that it is a general issue.