How to determine the site where the authorization is through Steam, but in the authorization history, this site is masked?

Question

Steam

Once upon a time, I traded skins from CS:GO on sites, but then I abandoned it, but a large amount of money remained on one of the sites. Recently I remembered this, but I forgot what the site was, I tried to find it, but all without success. The only thing I have is a screenshot from the history of recent logins to third-party sites through Steam, but this site is masked there. Attached a screenshot below.