Hi,
Can you please try to put the robot in user mode and are if it works to download the package?
1- stop uirobot.service
2. close tray/studio
3. cmd > sc delete UiRobotSvc
4. Start tray > UiPath.Agent
then you verify that it uiservice.host is running as a process, not as a service (you can are this in the windows process explorer)
Try to download the package now.
To put it back in service mode you close everything and type uirobot.exe --restart in your installation path, în cmd.