CSV Date Format

Hi, I can’t figure out the date format for csv imort to make the time filters work. I would like to display date of the last 2 months %last 2 months%, but can’t get it work. I’ve tried dd.mm.yyyy as well as yyyy-mm-dd
Do anyone has hint?

yyyy-mm-dd should work. I have a test with the same.
this filter here.
any more info from your side?