MTGO download link does not work in modern browsers
The current MTGO downloader is located here: https://magic.wizards.com/en/mtgo#download-now
The "download now" button downloads an exe, which is widely regarded as a security flaw and modern browsers do not allow it unless workarounds are employed. You need to test this page with modern browsers to make sure people can download the game.
This issue was discovered on Windows 10 x64, Chrome version 86.0.4240.75 (Official Build) (64-bit)