Brain not connecting to students chromebook using VEXcode v5

I am having my students turn on a motor today and most of their VEXcode V5 software programs are not recognizing the brain therefore they cannot download their code and turn on the motor. Some of their chromebooks are issuing an error message stating “not connected to Internet” when they attempt to download code. Any ideas would be appreciated.

Internet access is needed to build programs on chromebook. There are some troubleshooting tips here.