I go to Settings, check the "Set up 2-factor authentication" box, click Save, reload the page, but clicking on "2FA installation link" does nothing. I tried copying the "secret" value from the link and using it to manually add an account in my 2FA app (Authy) but that doesn't seem to work. The account gets added, but the codes it generates don't seem to work for logging in (using a different browser).

I really don't want to lock myself out. Am I doing something wrong, or is this a known issue?