It worked 2 days ago . I did not change my passwords since then . I have tried to access the master account management page from several accounts with the same results “Authentication failed, please check your password and try again” . And as I said when you log in to https://account.secretworldlegends.com/ with Steam button, you don’t have to type in the password because the authentication is done by steam api - yet it gives me the same password error.
Edit: I did password reset (just in case) and still can not log in with the newly generated password.
It’s not the first time the authentication to master account is broken. I have encountered the same issue about 2 months ago. I couldn’t log in to my account for about 2 weeks then suddenly it started working and fixed by itself. It’s sad because I just bought the DLC packs from Steam and wanted to activate the keys on my account and I can’t