我已经通过编写一个插件部分修复了这个问题，在该插件中，我生成了一个短代码，如果用户登录，我可以在成为成员后使用它进行编程。

function wp_add_missing_membership ( $user_id, $plan_id ) {
    if ( ! function_exists( \'wc_memberships\' ) ) {
       return;
    }
    $args = array(
    // Enter the ID (post ID) of the plan to grant at registration
    \'plan_id\'       => $plan_id,
    \'user_id\'       => $user_id,
);
wc_memberships_create_user_membership( $args );

// Get the new membership
$user_membership = wc_memberships_get_user_membership( $user_id, $args[\'plan_id\'] );

// Add a note so we know how this was registered.
$user_membership->add_note( \'Membership imported from other site\' );
}

function has_woocommerce_subscription($the_user_id, $the_product_id, $the_status) {
    $current_user = wp_get_current_user();
    if (empty($the_user_id)) {
            $the_user_id = $current_user->ID;
    }
    if (WC_Subscriptions_Manager::user_has_subscription( $the_user_id, $the_product_id, $the_status)) {
            return true;
    }
}

function bb_fixmembership ( $atts){
    $a = shortcode_atts( array(\'plan\' => \'0\'), $atts );

    $what_s_the_plan = $a[\'plan\'];
    if ( is_user_logged_in() ) {
            $user_id = get_current_user_id();
            if (wc_memberships_is_user_active_member($user_id, \'student\')) {
               // do nothing - all is good
            } else {
                    wp_add_missing_membership($user_id, $what_s_the_plan);
            }
    }


}

add_shortcode( \'fixmembership\', \'bb_fixmembership\' );

我只是发布了一个答案，因为我没有看到大多数帖子被回复：）所以我想这可能会帮助其他人。。。

将在我完全修复它时发布。