Eventbrite linked webinar- registrants not showing.

Good morning.  I have a webinar scheduled in a couple of weeks. It is linked to Eventbrite. Eventbrite tells me 45 people have registered, but when I look at the Total registrants in Zoom, it says only 6 (6 approved, 0 denied/ blocked). These are the first 6 people who registered. Where are the rest?  The help autobot is useless.  I've registered myself for the webinar via Eventbrite just now and have been sent the link to the webinar, so the connection does seem to still be there. Thanks for your thoughts.