i want to have download only one time per user. i put this " Only Once Per User" in rule below expires field and also in Method but after save the  below expires field display 1 Day ans of course tha way my user can download multi times an of course win my download points.
Can you help me please?

Hi
If you look further down the Limits page for the relevant Usergroup youwill see an option "Number of downloads Limit"  If you set that to  1 then each user will only be able to download that file once.
Colin