This probably means your calendar is not updated. Click on “Calendar” on the top bar and make sure you have availability for the dates you actually need people. You can close or open entire months by clicking on the number of vacancies on each month and you can also block specific dates. If you are receiving applications too far in the future, you can close the availability of those months, in order to gather applications for the near future. Have in mind volunteers can apply up to 6 months in advance.