Port-forward: FAILURE: the device is not connected

General Discussions
1

I am running mender-client version 3.5.3 on a system with Ubuntu 22.04.5 LTS and hosted mender and the mender trial.
The device is registered and accepted on the hosted server. Deployments work.
I am following the docker-compose tutorial instructions. The deployment of the docker compose artifact file worked.
I am trying to get the the port-forward to work. Login is successful.
However, I get the following output.

mender-cli port-forward device_id 8080:8080                      
Using configuration file: /home/user/.mender-clirc
FAILURE: the device is not connected

How can I get the port-forward working? Is this a paid add on? As I said, I am using the trial.
On this page, it is listed under open-source, so I am a bit confused:
https://mender.io/pricing/add-ons/troubleshoot

Thanks.