We don't make the maps you see in the apps. They come from Google Maps (for the web app) and Mapbox (for the mobile app). We can update them only when map providers update them. This doesn't happen often. Updates occur only once every several years and not for all regions of the world at the same time.
These maps are used only to make navigating easier for you. Please note that we don't base ourselves on these maps to calculate the NDVI data you see in the apps. We calculate NDVI based on new satellite images and overlay the result on these maps. The maps might look outdated, but that doesn't impact NDVI updates.