Library management plugin setup not show

Hi, I’ve used your plugin so much time. But this time I want to give the integration of the library management system. I set up all dashboard for my client. But it still not show the library management dashboard. Can you please tell me what should I do for this?

The plugin URL is: https://ww.wp.xz.cn/plugins/library-management-system/

The page I need help with: [log in to see the link]