This can be solved by clearing cookies for the site, re-logging in, and trying to connect the steam account. Simply reloading, or even logging out and back in is not sufficient to fix the problem.

This can be solved by clearing cookies for the site, re-logging in, and trying to connect the steam account. Simply reloading, or even logging out and back in is not sufficient to fix the problem.

When I go to https://www.faforever.com/account/link, and click on the Sign in through STEAM button (below):

I am redirected to https://www.faforever.com/account/connect, and I receive the error:

Error! Your steam account was not successfully linked! Please verify you logged into the website correctly.

This happened after I attempted to link my Steam account while forgetting that I had not set my game library to public. I am now unable to connect my account to a steam account.