These are the most common situations and how to solve them.
"This code does not belong to your account"
You are opening the kiosk link of another license, or you are not logged in with the license owner account. Always use the URL shown in your own configuration panel, Hardware tab.
The link opened on the wrong computer
The link bound to the first computer that opened it. Open the Hardware tab, Screen controller card, press Unbind and open the link again on the correct computer. If you also suspect someone else saw the link, use Regenerate to invalidate it completely.
The controller shows as disconnected
Check that the controller has power and internet access, on the same local network as the FAP computer. Open the Controller logs: if there are no recent pings, restart the device. Also verify it was not revoked.
Commands do not reach the hardware
Enable Debug logs and repeat the action. If the event appears in the logs, the problem is the controller wiring or pin; if it does not appear, the problem is communication between the FAP and the controller. Check that the controller IP is on the same local network as the FAP computer.
I made changes and nothing looks different
Press Save configuration and reload the simulator with a hard refresh (Ctrl+Shift+R). The kiosk browser may keep the previous version cached.
No audio
In kiosk mode the browser requires a first user gesture to enable audio: tap the screen once, or use the start overlay. Also check the computer volume.