Hi,
seems that the GSG studioview has some issues connecting to Google Maps and reports REQUEST_DENIED both for the trajectory generation based on the address and the altitude/elevation fetching.
Unfortunately, StudioView is considered an End of Life product and was not updated to support the Google Maps API.
Although not ideal the maps still work in “degraded mode” which can be used to build an off-road trajectory. For routing or road trajectories, an external mapping tool like google Earth can be used.
See the Importing your CSV file into Skydel section of this article.