This message will appear should you not land in the area designated as the runway. Many of the challenges feature a paved runway, meaning it should be clear where to land. However, some runways (e.g. Barra Airport) do not feautre a paved runway and knowing where to land is a bit more challenging.
In instances where there is a lack of paved runway, a blue box with an arrow will indicate the direction of the runway and the touchdown zone. This is what you should aim for.
We have tested all landing challenges and can confirm they are all possible to complete. If you see this message, it means you did not land or come to a complete stop on the runway.
If you are convinced that a particular challenge has a bug, please submit a support ticket. Please be descriptive and provide screenshots where possible.