Hello plantpurecommunities,
Thanks for reaching out!
Sorry to hear about the issues. I’d be happy to try and help solve this.
I went to the URL you shared and created a test event. In the process I chose and existing test venue and organizer, and selected / entered values for the required fields.
Afterwards the event successfully submitted.
I did encounter some issues when I tried to create a new venue and organizer.
I looked at the web developer tools console of your site (F12 or Ctrl + Shift + I on Chrome / Firefox, Option + Cmd + J on Safari) and saw some errors there:
Based on that there might be a conflict with one or more of the plugins that you use.
To check this please go through our conflict testing guide and let me know if you find anything.
Thanks and cheers,
Andras