I've installed wordpress successfully yesterday. And I believe that I've changed the password of admin. But the next day -today- I just can't login anymore. Everytime I tried to login with the username "admin" and the password I've changed, it just jumped back to the login page. I tried "Lost my password" and with the new password of "admin", but it remained the same. I have no idea what to do now. Can anyone figure out what my problem is, please? Thanks in advance.