Today, all Steam users are unable to log in to the website

Undoubtedly, as of now, all Steam players who have not bound their email to log in are still unable to log in to the website. The website still provides a large amount of gaming experience. Firstly, union management is carried out, and we usually manage union personnel, funds, and permissions through the webpage; In addition, it is not possible to conduct transactions on the web marketplace, which undoubtedly greatly reduces the gaming experience. I hope the production team can take this issue seriously and solve it.

This was an issue caused on the side of Steam, nothing GGG can do about it. Apparently, Steam's OpenID was down.
For me personally, it is now working again.