Hi, sorry for the late reply. I have just starting working on this again as I gave up last time as it got very frustrating. I made sure to update my website to the latest woocommerce and I use the 1.3 version of your plugin which I understand is the latest. I tested the links without the plugin and they work fine. When I activate the plugin I get this error:
There is an error in your link code.
There is an error in your link code. Please get a new copy of the code from your account and replace the current code on your website.
Shareasale.com manages the relationships between advertisers and affiliates, which is why you were directed to our site. Since the link that you clicked contains an error, you were not redirected to the site.
I have tried with quite a few SAS merchants and I always get the error even on other wordpress sites when I activate your plugin.