Our organization uses Lu.ma to track event guests and we would like to create an integration that adds each new guest that registers for an event with us through Lu.ma to our Bloomerang database, and captures the amount they paid for the event registration as an interaction in Bloomerang as well. A number of the guests at our events are return users, so ideally Zapier can automatically recognize when the user is a returning guest and not create a duplicate in our Bloomerang database. I would like for the system to essentially work like this:

User registers for an event in Lu.ma > Zapier searches for this user in Bloomerang > If found, Zapier captures the event registration as an Interaction under the existing user > If not found, Bloomerang creates a new Constituent with an Event Registration interaction nested under that user. 

Right now, I am getting stuck on the very first step of testing whether Zapier can see my event registrations at all. Here is what I am getting when I try to test my first trigger:
 

Can someone help me try to figure out what is going wrong?