php curl script to scrape flight information

Hello, I need a script to scrape flight information. I already have the script (attached) But it fails to get the flight information for some reason. You can try to run the script and inspect [login to view URL], there is a div section with the text PLEASE WAIT which should be populated with the flight data, but it doesnt. So there is still one more step to do, but I don't know how. Max bid $30