Currently this is broken when using the Logic Tab editor in a datapage report. If you attempt to use the operators (Today and/or before/after Now) using the Logic Tab, this will fail because the operators/values keep resetting to the same.

You have to use the original way of adding criteria. (http://howto.caspio.com/faq/reports-datapages/how-to-add-today-to-after-now-or-next-x-days-criteria/)