I contacted amazon associates and they responded within 5 minutes, I thought I'd be waiting for days!
Here is the reply I received:
Thanks for taking the time to contact us; I'd be glad to help.
You are more than welcome to use this plugin, as it is in accordance with our Operating Agreement.
Please keep in mind that we're not able to provide development support beyond what is offered in Associates Central; therefor, if you have any issues with the plugin itself, you should contact WordPress for further assistance.
You may also visit and or post on our Product Advertising API forums. Many experienced members of the Amazon Associates program regularly participate in the forums, and can provide assistance if you encounter issues. You can access the Discussion Boards via the following URL:
I hope this helps! We look forward to seeing you again soon.