[Plugin: Amazon Product In a Post Plugin] Which Amazon key does it want?

I see your plugin now has two text boxes for the entry of the AWS public/private key pairs, but it does not function when I enter the actual Cloud/EC2 key pair I have from Amazon. There are 3 different tabs with 3 different keys, all for different uses. Can you please explain which keys from which tab to use? I have tried them all but none of them work and I am at a loss as to how to get this to work right now. I have switched to CURL and am still getting just the blank picture with the () instead of the product content.