Struggling with Mixpanel Filters? Here's How to Fix Missing Properties!

Hi, I'm new to Mixpanel and am struggling to do anything in it. I'm trying to create a filter based on my event type so I can filter to only event = "choice", but as you can see in my first screenshot, when I try to create a filter, there are no properties appearing for me to select. What am I doing wrong? kapa.ai