You can find the latest installation packages for all major platforms on the Lebo Projection Download Page : :
The (乐播投屏) client is a professional cross-device screen casting application developed by Shenzhen Lebo Technology Co., Ltd. . It allows users to project content from smartphones, tablets, or computers onto larger screens like smart TVs, projectors, and computers. Download Options & Compatibility
If you're having trouble with a specific device, let me know: Are you trying to cast a phone or a laptop? What is the brand of your TV or projector ?