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 be that you have a conference which is still active but still doesn't show up. Probably you have entered a wrong end date.
You can correct this in the conference data either on the main data tab or on the internet tab.
On the main data tab:
Change the finishing date of the conference.
On the internet tab:
Here you find the checkbox below.
When you have selected the checkbox the conference will show up in the list.