I reviewed the directions again from the following page
http://www.tipsandtricks-hq.com/ecommerce/wordpress-estore-and-wishlist-plugin-integration-448
And based on this step…
3. When configuring a button use the Membership Level SKU in the “Reference Text” field under the Additional product details section.
I did this part correct but still “a link to complete the registration” is not happening either as a redirect or being sent by email. Does this mean I don’t have Wishlist Member set up correctly somewhere? I’m going back over that now.