Thirty users are invited, eighteen start setup, twelve export successfully, and seven activated users return at the next relevant interval. All twelve activated users had a full follow-up window. Report the useful rates with limits.

Invitation activation is 12/30=40%; setup completion is 12/18≈66.7%; return among activated users is 7/12≈58.3%. State counts, windows, eligibility, and small-sample limits. A return event does not by itself prove workflow replacement or causality.