You can only add feedback on a machine after you have started it.

How to submit feedback on a machine while connected through Kali Linux

1. Click on the MORE menu at the top of your screen.
2. Select the Feedback option from the drop-down menu
3. Type in your input in the feedback window and click Save to submit your feedback.

How to submit feedback on a machine while connected through VPN

1. Click on the three vertical dots (More Command) menu located on the far right of the lab machine row.
2. Chose the Feedback option in the drop down menu.
3. Type in your input in the feedback window and click Save to submit your feedback.