Can newborn sleep on this?

Laura

My 9 day old newborn refuses to sleep in his pack and play.. the only place he kind of likes is the portable napper.. I know they're suppose to sleep in a flat surface but he won't sleep at all.. the minute I put him down he'll cry.. how can I get him to sleep in his pack and play? Or can he sleep on this napper? it's the one on the left...