I am being restricted on some app downloads by content filtering
In the Playstore app, head over to settings> content filtering and tick all the boxes in it.This should turn off content filtering.

If youve forgotten the PIN, you can reset the Content Filter pin by clearing the app data for the Play Store. This will clear the pin and also remove the filter.


Go to Settings > Apps
Tap on "Google Play Store" 
-Tap the "Clear Data" button.