This guide explains why a website may be "broken" or no longer display anything after a password change at the Web Hosting level.

Broken link to the database

When your website, and more specifically a script (CMS, WordPress, Prestashop, or any other application using MySQL databases), can no longer connect to the MySQL MariaDB database or another database, an error message may appear, such as:

• Error connecting to the database
• Database Error: Unable to connect to the database: Could not connect to MySQL
• Link to database cannot be established

Remember your last action…

If an error occurs on your site, you should always examine the recent history. In this case, has there been…

1. …an action on your part regarding the configuration file of the script in question? Has it been affected, modified, or moved?
   
   Sometimes, the unintentional insertion of a space before or after a word can break the link between the web server and the database server. Go back to your file modifications.
   If necessary, restore an older version of the files that you recently modified.
    
2. … a change to the database password in the Infomaniak Manager?
   
   If you change your database password via the Infomaniak Manager, your script, which retrieves its information from the databases, will no longer display anything. Changing something in the Infomaniak Manager means you need to change it everywhere else. This change you made in the Manager must also be reflected in the script's configuration file by connecting via FTP and modifying the appropriate file, usually "wp-config.php", "configuration.php", or similar.
3. … a server migration announced by Infomaniak?
   
   If this error occurs after a server migration or other operation announced by email and related to the product in question, do not hesitate to contact Infomaniak support.