We have a couple of Google Adwords campaigns that we use on our ecommerce site and we have only 1 product and use a Paypal button.
There have been issues with conversion tracking as we cant see data in our Adwords account. Our Google Analytics and Adwords are both linked and we have tried everything to make it work. Setup goals, ecommerce etc. Also for our Paypal button we use Auto Return, changed different codes and still with no success of tracking conversions with Adwords.
This is a simple project for the right developer with experience in this field and quick cash!
Please send me a response if you have had experience with this so you can collaborate with my webmaster to solve this issue.