Power Automate to start a K2 Workflow

When using the K2 Start Workflow Connector from Power Automate, I add the Workflow ID, but then get this error:

Failed to retrieve dynamic inputs. Error details: 'The dynamic operation request to API 'k2workflow' operation 'GetWorkflowSchema' failed with status code 'TemporaryRedirect'. This may indicate invalid input parameters. Error response: { "error": { "code": 307, "source": "europe-001.azure-apim.net", "clientRequestId": "xxxxxxx-xxxx-4xxx-xzxxx-xxxxxx", "message": "The response is not in a JSON format.", "innerError": "Cannot read server response." } }'

I just want to see if we can start a K2 Workflow from Power Automate.

Any ideas on how to fix this? 

Thanks