problem in ndrive please help

[kamara]

hello ,,,

i installed ndrive egypt pro from black market alpha

and i downloaded the egypt map and the necessary files

when i open the prog to Navigate no map appears

it Show me a message the ((out of road))

knowing that i try to install the demo version from google play

and the versions that here on this forum but the same result ((out of road))

sygic and route 66 are working perfectly on the same phone

my android version is 4.4.2

please i want to solve this problem because i need this app