I can not login to manage my account at https://register.ageofconan.com/account and I am getting " Authentication failed, please check your password and try again" error. My password is correct because I can log in to the game. I have tried https://account.ageofconan.com/ as well.
The problem also occur when trying to login at https://account.secretworldlegends.com/ with Sign in through Steam button.
Game Password and Account password can be different. Logging in game doesn’t necessarily mean the account password is the same.
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 
Okay so I digged down deeper and found out that Funcom (for some unknown reason) has blocked logins to the master account management page (www) from my home cable ISP IP.
I connected from mobile phone IP and it went thru. After that I reconnected back to my home ISP and I can now log in to the account successfully.
Anyway this is not how things should work…
The issue is back. I can’t login to account management page. I really want to know what is the reason behind blocking logins from my IP every second day.