When a new customer visits your site, the Black Crow pixel makes a number of machine-learning driven predictions to determine whether/when to resurface your welcome overlay. In addition to this, the pixel measures customers who are shown this resurfaced overlay and whether they go on to submit their email / phone number. These events are captured and aggregated to display the performance of your Predictive Offer in the portal.
Note that because these events are captured by Black Crow's proprietary pixel, there may be slight differences in signup numbers as compared to the platform which powers your welcome overlay (ex. Klaviyo / Attentive).