Did we try once running from studio in attended mode
Make sure you have installed the robot in service mode to run in unattended
Service Mode - recommended for unattended automation scenarios and large-scale platform deployments, and runs with the same rights as the user under which it is registered.
User Mode - recommended for attended automation scenarios, and runs under the user that installed it, having the exact rights as that particular user.
check if you see below service in details tab or services tab of task manager
UiPath.Service.host - this comes only for service host
UiPath.Service.Userhost - this will be there for user mode…