When I click it, the link just doesn’t do anything. I’m on Windows 10. Anki 2.1.21 doesn’t have this problem, but .28 and up do as well. I didn’t try with .22 - .27.
Also the link should probably point to https://ankiweb.net/account/register (instead of /login). When I explain Anki to people this confuses a lot of them because they just type in their data, hit enter and get an error. Clicking on a registration button should lead to a registration menu, not a login menu. If this is a translation issue, let me know if I can fix it myself. In that case it would be great if you could send me another invite to the current translation platform.