[Plugin: Product In A Post] Completely Not Working

Hello,

Recently I installed the product in a post plugin for a wordpress blog. I entered my public key, secret key, and Id, yet when I enter an ASIN no product shows. I’m pretty sure my keys are valid because I verified them in another plugin. I also changed the options to the Curl method which the FAQ said might fix a lot of of problems. However it still doesn’t work. Does anyone have any suggestions?

Thanks