The authentication failed, are you sure you’re using the correct password? The FTP password is different from the password you login to the client area with, it is located in your account overview:
If you’re sure you’re entering the correct credentials, check if your website is on one of the IPs mentioned, perhaps the outage is affecting your access:
Both work, ftpupload.net is preferred.
Shouldn’t be necessary, unlike your password it isn’t sensitive information unless you’re using very weak passwords like 123456
