Thank you for reaching out to the Community about your Campaign! I'm sorry to hear you do not see any registrants. I would however like to clarify if you are looking for assistance with your Event Campaign, or your most recently sent Newsletter Email? This is an important detail to have as I can see there has not been an invitation email sent through your Event Campaign. Contacts will not see this event registration until an invitation email is sent, or the event URL is shared in an outside email. While on the other hand, your Newsletter Email has had responses to your RSVP action block. Do you see the responses under this campaign?