In fact, the grid but to animate our baby, wanting necessarily climb over! In addition, I was able to not so good over take lying down, to calm it. A simple solution for us was to remove the grid again and only the lying surface of Babybay deeper down, however, the child has then repeatedly hit her head on the frame of the large bed, until I caught a bed frame there. That was ok.
To set up the Babybay separately, the grid is definitely too low.
Conclusion: As an idea, this additional equipment is good, but for us the solution has not proven, we are well without it.