UiPath Powershell script error - To sync up AD group

We are configuring import procedure(powershell script url is specified below) to sync active directory group and UiPath user list. We are unable to connect to Active directory server using UiPath’s locally created admin(which will not be possible as admin user is not part of Enterprise ID, find the error message below and screenshot attached). However when we tried with User ID available Active directory, we are not able execute Get -uipathRobot
and generate the list of Robot available in the Orchestrator tenant. The user is assigned with administrator privileges. is there any workaround?.