The Report Date Range will default to the Challenge Date Range of the challenge selected in the designated email. If you change the Challenge Date Range of a challenge for which emails have already been created, you will need to edit the Report Date Range for all of these emails. That is, the Report Date Range will not automatically update in emails that have already been scheduled or saved as drafts.
To edit the Report Date Range of an email, select the Edit icon under the Actions column on the same row of the email that you would like to modify under Communications > Email. Change the Report Date Range to match the Challenge Date Range or the period of time suited for the email. To save changes, select Save at the bottom of the Add Email and Edit Email pages or schedule it to be sent by selecting Schedule.