I have NO idea what the other users are speaking about.
I signed up for Post Affiliate Pro monthly plan. Installed the WordPress plugin per the instructions.
1. Add plugin
2. Got my API file, uploaded into the plugin directory
3. Activated the plugin
4. Add my username and password
AND BOOM! it works.
The Post Affiliate Pro software is amazing and SO robust. I have spend over 2000.00 on other software trying to find what this software does and its all in one. I dont have to use multiple other software to accomplish what I need.