Tutorial: Sync your WooCommerce contacts with Constant Contact

Not all of my WooCommerce contacts are syncing into CC. I followed the steps and disconnected and deleted the plug-in and re-installed, but it's the same.

For example, I have six new first time customers listed, but CC is only showing four AND then CC has only sent out the Welcome series to three of the customers. 

I know the plug-in for Woo gets terrible reviews...why isn't CC fixing this????