A blank white page or a message saying "There has been a critical error on this website" almost always means a plugin, theme or PHP version conflict.
- Check your email. WordPress often sends the admin address a message with a recovery mode link. Click it to log in safely and disable the plugin or theme it names.
- Turn off all plugins. In File Manager, go to
public_html/wp-contentand rename thepluginsfolder toplugins-off. If the site comes back, rename it back toplugins, then re-enable your plugins one at a time in WordPress to find the culprit. - Switch theme. If plugins were not the cause, rename your active theme's folder in
wp-content/themes. WordPress will fall back to a default theme, if one is installed. - Check the PHP version. If the problem started after a PHP change, switch back in MultiPHP Manager. See How do I change my PHP version and settings?
- Read the error log. Look for a file called
error_loginpublic_html, or turn on debugging by addingdefine('WP_DEBUG', true);towp-config.php. Remove it again when you are done.
If you are still stuck, restore a backup from before the problem began, or open a ticket.
