Can I export the report for any dates I select on MPC Dashboard when viewing the preview of the report?​

No. The report is designed to be a Monthly performance report. It can be viewed as UI preview for any date range, but when generated as pdf (one time or recurring), it will always report on the previous month. For example, if it is set up to be delivered on the 5th of every month, then the report delivered on the 5th of June will have data of May, and the report delivered on the 5th of July will have data for June.