Still can't log in or transfer on the occasions that I can

There is probably something wrong on the server side or your username/password is wrong if you cannot login with any FTP client.

There is probably something wrong on the server side or your username/password is wrong if you cannot login with any FTP client.
Thanks. And what about not being able to transfer when I can get logged on?

Please post the log of the failed transfer after you are logged in.