Not able to get access token from HTTP Request activity

Hi guys!

I’ve been trying to use HTTP Request to Add Queue Items but i have a problem with granting Access Token.
At first I tried if it is working in Postman. There everything was fine. I was able to get Access Token, to add queue items, to get jobs.
Then I tried to implement this into UiPath project. Even though getting jobs with HTTP Request activity is working, I am still not able to get access token nor add queue item via HTTP Request activity.

I am trying with below setting:
- EndPoint: “https://cloud.uipath.com/identity_/connect/token
- BodyFormat: “application/x-www-form-urlencoded”
- strScope = “OR.Queues OR.Folders.Read OR.Jobs.Read offline_access”
- There is only set collection in Parameters section (like in the screenshot below)

When I send this HTTP Reuqest in UiPath I get a message: {“error”:“invalid_client”} even though I am using the same ClientID and ClientSecret in Postman, where everything works fine.

Do you know what might be the issue there?