Ja…it is most likely your wp-config file that needs updating.
You can use WordPress Codex link here which explains what to do: https://codex.www.ads-software.com/Editing_wp-config.php
Or this tutorial which covers whats needed as well: https://www.a2hosting.co.za/kb/installable-applications/optimization-and-configuration/wordpress2/updating-wordpress-database-configuration-settings
More than happy to help if you don’t come right.
