FTP and database passwords scan
The scan
This scan checks your FTP and your database passwords are strong enough. The FTP password is checked only if it's defined.
The fix
SecuPress can't fix this. You have to do it manually from your hosting admin interface.
How to change your database password
Your site is hosted by Infomaniak
https://www.infomaniak.com/en/support/faq/2017/modifychange-all-passwords
Your site is hosted by WP Serveur
Open up your console, click on your site and "Change your database password."
Your site is hosted by o2Switch
http://faq.o2switch.fr/hebergement-mutualise/tutoriels-cpanel/comptes-ftp?s[]=ftp
Your site is hosted by SiteGround
https://www.siteground.com/kb/how_do_i_change_the_ftp_password/
Your site is hosted by GoDaddy
https://fr.godaddy.com/help/reset-your-ftp-username-and-password-6
Your site is hosted by WPEngine
https://wpengine.com/support/how-do-i-change-my-sftp-password/
Your site is hosted by Dreamhost
https://help.dreamhost.com/hc/en-us/articles/215613157-Where-do-I-find-my-FTP-login-credentials-
Your site is hosted by Hostgator
http://support.hostgator.com/articles/how-to-change-your-ftp-account-credentials-plesk-10
Your site is hosted by Bluehost
https://my.bluehost.com/cgi/help/769
Your site is hosted elsewhere
Please get in touch and ask for relevant documentation.