Any new with this?
I've tried using Designed For Families flag with current setup:
Copyright (c) 2015 SDKBOX Inc. v184.108.40.206
but got no banners at all. I've revoked my Designed For Families flag and automagically I got ads back.
There is a code sample here given by google. May it be useful for adding support?
PS: I targeted Ages 5 & Under and Ages 6 to 8, if that matters for testing purposes. My game had been run at several countries while being 'designed for families' but no ads were shown at all during that period.