E-mail registration

Hi,

We have a zoom webinar account. To enter a webinar, registration is not necessary. So in registration settings, we filled in: registration not mandatory. In the email settings we also filled in not to send an email to participants. Emails are also not part of the user rapports. 

But still, users need to fill in their email adress. If you click on the info-button, zoom says it's because the organisation demands it. That's not the case.. 

How can we fix this?

Thanks!