Hello, I recently figured out one problem, a friend had a problem. After installing it, it opens the command line 2 times and then closes. This happens 2 more times and then the file is deleted.
This video-https://drive.google.com/file/d/1JO-lSu6mo8y7zN7vFi5W6XQyI6UAjtyY/view?usp=sharing
Please try Manually updating the Launcher - BeamMP Docs.