Why can't i find these plugins?

Hi- bought the affiliate program, but am unable to find and activate the following.

are these essential to running it correctly, if so how can i activate them

Affiliate debugging
Adds in a debug system to the affiliate plugin to help track down potential cookie issues
Inactive

Directory -- plugin not installed
Affiliate system plugin for the WordPress Directory plugin

MarketPress -- plugin not installed
Affiliate system plugin for the WordPress MarketPress plugin. Used to track purchases from affiliate referals.

Membership -- plugin not installed
Affiliate system plugin for the WordPress Membership plugin

Pro-sites -- plugin not installed
Affiliate system plugin for the WordPress Pro-Sites plugin.

Captures Affiliate transaction for Pro-Site paid upgrades.