If anyone else has a similar question – as we’ve figured out in private emails – both options that were mentioned (i.e. relating by attribute without setting the attribute value and changing the title) are in Pro version only. In the free version you can relate by attribute (e.g. “color”), but you also need to set attribute value (e.g. “Red”) manually. I.e. if you want to omit setting the attribute value and instead use automatically extracted attribute value of the current product – you will need Pro version of the plugin. As for changing the title – it’s in Pro version only.