I am being assigned as both host and guest and cannot start meeting

Hi @Annex11 ,

     We appreciate you reaching out for assistance! Unfortunately, when it comes the the FlexBooker integration, Zoom support has very limited insight. The reason for this is because the integration between Zoom and FlexBooker is owned & maintained through FlexBooker (please see the image below). You can get in touch with FlexBooker support by using this link: https://help.flexbooker.com/en/. 

Thank you!