I cannot download or cache offline maps for my Phantom 4 Pro Plus. The cache maps option is not in general settings. When I select the map button on the DJI GO main page nothing happens. This is beyond frustrating, why has this NEVER worked properly?

I cannot download or cache offline maps for my Phantom 4 Pro Plus. The cache maps option is not in general settings. When I select the map button on the DJI GO main page nothing happens. This is beyond frustrating, why has this NEVER worked properly?