The documentation on how to set up the plugin is great. Despite that, not all worked right from the beginning. Still this plugin gets at least four stars. Why?
The support by the engineers is excellent. Your ecommerce offer is undoubtedly different from mine. So, it is hard to cater for all these differences. But the support engineers are right on top of any issue you might encounter. They go the extra mile to see to it, that you can run your business. They are easy to reach, fast and responsive. And all that builds trust.
So the plugin and the company behind it come highly recommended.