I have a few assumptions (please clarify) and then a couple of questions.
Assumption #1: You are using the desktop (not Web) edition of Office 2013. Correct?
Assumption #2: You are attempting to install the 64-bit edition of Jet Essentials 2012 R2:
Now for the questions:
What issue are you experiencing when you attempt your install?
Do you experience the same issue when installing the latest release (Essentials 2015 - http://jetreports.com/download/)?
Installing Jet Essentials on Office 365 x64