Can't login to view my stats

Hello everybody,

Since yesterday, I tried to login in my piwik. Since, I’m not sure about my password, I go to the lost password page and enter either my username or e-mail then I’ve got the message : Error: Invalid username and/or e-mail address. I checked it in the config.ini.php file and they’re right. I don’t remember the version of piwik…
What can I do ?
Thank you for your help !

please update to the latest version of Piwik: you will then be able to change your piwik super user password.