Troubleshoot WordPress plugin Event Manager Pro -- 2

As seen in the screencap: [login to view URL] The default ticket amount is 1. It should be 0. Please bid only if you're familiar with plugin code and are confident you can do this now. Please put HAGAJI in your bid if you have read this and understand the project. Please put HAGAJI in your bid if you have read this and understand the project. Please put HAGAJI in your bid if you have read this and understand the project.