Missing URL in password reset email

The problem is the < and > which surround the reset URL in wp-login.php. You can remove them using retrieve_password_message in your theme functions.php file like below:

add_filter("retrieve_password_message", "mapp_custom_password_reset", 99, 4);

function mapp_custom_password_reset($message, $key, $user_login, $user_data )    {

    $message = "Someone has requested a password reset for the following account:

" . sprintf(__('%s'), $user_data->user_email) . "

If this was a mistake, just ignore this email and nothing will happen.

To reset your password, visit the following address:

" . network_site_url("wp-login.php?action=rp&key=$key&login=" . rawurlencode($user_login), 'login') . "\r\n";


    return $message;

}