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You have to check if PHP mail is working in your server or debug WP's mail, there are several ways to do this, I would first test if a basic PHP mail function works. The is as simple as running this from a PHP file or the command line: mail ('your@email.com', "Test", "Test mail from wordpress"); Find out what mail service is on your sever and debug it ...


The simplest would be to add a series of two very short (mu-)plugins. This also adds routes for page/2, etc.: http://example.com/u/%author% <?php /** Plugin Name: (WPSE) #46074 Add /u/%author% routes */ register_activation_hook( __FILE__, function() { flush_rewrite_rules(); } ); register_deactivation_hook( __FILE__, function() { ...

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