Eventure automatically hides conferences with a finishing date of 60 days and older in the download list. This prevents you from having a long list of conferences you don't need.
It might occur that you have organized a conference which is still active but doesn't show up in the list. Probably you have entered a wrong end date.
Change the finishing date of the conference in the 'Main Data' tab.
If you have entered the correct data and the congress still doesn't show up, your congress has probably finished 60 days ago or longer. You should mark the checkbox in the 'Internet' tab.
Now the conference will show up in the download list.