3D FlipBook - Good morning. I’m trying to update the 3D Flipbook plugin to the Pro version at my Wordpress web site. I downloaded the zip

Good morning. I’m trying to update the 3D Flipbook plugin to the Pro version at my Wordpress web site. I downloaded the zip file, and when trying to upload it through the WordPress control panel the system shows me a message telling that the link is no longer valid, and the plugin is not updated, still running the light version. Could you please help me? Thanks