Contrary to some open-source libraries, DevExpress uses a proprietary licensing system. You cannot download the installer via a simple wget command without authentication. Here is the official process.
After the installation finished, Alex opened Visual Studio 2019. The DevExpress menu appeared in the toolbar. But before coding could begin, a prompt appeared: “Register your product.”* download devexpress 21.2
This is a crucial step for version 21.2. npm (DevExtreme):