Once again, thanks for all the information. I will review my work method.
Just so you know: it seems like my password was the problem.
When I was using it in the console, I could login.
When I was using it with putty, it didn’t work.
There was a hashtag (#) at the end of my password. Just for the sake of testing, I replaced it with an exclamation mark (!) and BAM, it worked !
It’s not a keyboard issue, as I tried typing my password in the “username” field to make sure it was coming out ok in putty.
Oh well, it doesn’t make any sense but it works, I have no clue why…