ABBYY FlexiCapture Connector for UiPath - Failed to Open Session


Can someone share your experience of running the sample from " ABBYY - FlexiCapture Connector for UiPath". I followed “FC12UiPathConnectorGuide” and finished the below setups.

From Abby side:
I have installed FlexiCapture distributed version and uploaded the Abbyy sample project “ABBYY FlexiCapture Multi-Task” to Abbyy server. I also enabled web stations, Hot folders and made sure the tenant has “Administrator”,“Scanning Operator”, and “Verification Operator” roles.

From UiPath side:
I setup the assets, queue names and installed Abbyy.FlexiCapture.WebApi.Client.nupkg and Abbyy.Activities.UiPath.FlexiCaptureActivities.nupkg

But still, when I tried to execute the sample file “Batch Sender”. The process stops at “Create Batch”. The error message is as below,

“Create Batch: Failed to open session for the role type ‘ScanningOperator’ and workstation type ‘Scanning’. Please ensure the User name and Password used for connect to ABBYY FlexiCapture Application Server are correct.”

Please guide me if anything I missed. Thank you!