I’m having this same problem with the LearnDash Add-On and the Community Add-On. With the Community Add-On enabled, none of the LearnDash Activity drop-down options will come up when I select “LearnDash Activity” as the trigger. The problem is solved as soon as I disable the Community Add-On. Are there any plans to fix this issue? I’d love to award badges for both LearnDash and Community accomplishments. Please let me know if you need additional info.