I can't even reset my password without getting this message aswell. :/
I've been trying the CORRECT login for an hours or so now, don't know why it isn't working.
Edited:
Nevermind, got my account working now.
Edited:
I dont have the problem but you can actaully forget your login details and want to try, an example was today when I tried to access my alt steam account and then I tried like 15 times, eventually I gave up and had to recover the password, but I dont think he permanent banned you guys, or am I wrong?
I had two accounts. My main one is working, however my second one seems to be gone.
I was planning on giving it away once an option to change password appeared.