Welcome back,
Sorry to hear you’re experiencing issues. Can you please clarify where the organizer is not displaying, whether it be the back end of your site, front end, or both? I’ll also need you to please review our Testing for conflicts guide and reply back with your findings. I see your note about not having the Twenty Fourteen theme, so if you have either the Twenty Fifteen or Twenty Sixteen, either will suffice. If you don’t have any of the default WordPress themes, please download Twenty Sixteen so you can test as required. Lastly, your System Information will be required. Please send it over as a private reply.
Once I get a response, I’ll have a clearer idea on what direction to look and have the steps necessary to try and reproduce the issue. Thank you so much for choosing PRO and have a great evening. Cheers!