auto update play store app

[MA2]

Since last 3 months I am using S7 edge but every time I have to update all apps manually via play store even i checked auto update over wifi in play store.

Anyone is facing this problem and any solution for it.

TIA

[qersh]

go to settings in playstore and from update option change it to auto update

[MA2]

friend..it is already and mentioned above too