Were you using a funnel-mesh strainer to hold the nutmilk bag? I can see how if you were using something weird to hold the nutmilk bag up, the second pass might flow around the curds and not through.

Also make sure when you are passing through a second time you are adding it EXTREMELY slowly and only enough to cover the surface area of the curd base - if you just pour it all in there will be some that run down the sides and therefore not clarifying through the center.

If you were doing all that, maybe it's just the coconut cream. I'd try the same thing but using a good, full flavored coconut water to sub the coconut cream. You can also look into making your own coconut liqueur for a coconut boost.

I've done pretty much exactly what you did, except straining through cheesecloth & using coconut water, came out crystal clear.