Are you perhaps referring to the software program called rcloneview? That is a separate company. They have their own Community forum for posting questions about their product.
2FA for MEGA isn’t supported in RcloneView yet, but you can use an app-specific password for now. On Windows, you’ll see cmount instead of mount—if you install WinFsp, the regular mount option will appear. The paid version doesn’t make mounting faster; it mainly adds convenience features like automatic start, multiple mounts, and session persistence. The lifetime x2 license is a good choice if you want these extra features and future 2FA support.