Refresh Access Token Error When Calling OIC Endpoint

I have been stuck on this issue and need help figuring out how to refresh access token for an OIC endpoint.

I am designing an integration that reactivates an integration in debug mode. The endpoint I am using is OICBaseURL/ic/api/integration/v1/integrations/{id}. I am getting a 400 error when trying to call this endpoint (Deactivate Integration), ' Could not refresh the access token. The access token response return an unsuccessful status.'

For the connection, I am using OAuth Resource Owner Password Credentials.

The OAuth configuration in OCI application has Resource owner, Client credentials and refresh token checked. Access token expiration is 2600 seconds, refresh token expiration at 604800 seconds and allow token refresh.