Zte axon mini ( chinese version with nba logo) play store issue?

I got the very phone from china and the main problem is that the play store and its services doesn't work. :confused: :confused:
I tried installing .apk files (play store, play services) from other sources and even tried flashing gapps but neither worked (ie the device is rooted via kingo root) .

How do i fix this? Please help! :rolleyes: :rolleyes: