The CMS ecommerce Joomla has no standard exportfeed, so it is necessary to install an export module XML or CSV.
For example, we recommand you this one:
Of course it is possible to use another module if all required products informations have been exported in XML or CSV.
Today, we have no module that allows us to install the sales tracker, it is necessary to do it manually according to the documentation here.
It you do not know how to do, you have to contact a technician/webmaster.
Or you can use the module to install the tracker here.