Event campaigns are included as part of our Email Plus package. If you have our basic Email package, you can use our event tool for a one-time fee of $50 which allows you to send out invites and reminders and also manage your event during its duration.
I apologize that you did not find that information helpful, but it does appear that you were able to resolve the issue and send your event email.
If you have any further questions please feel free to reach out to us. We are always happy to assist you in any way we can!