Hello,
First of all, thank you for your purchase.
Yes, this settings field will enable globally (for all rules) the rel=canonical meta tag, which will help with SEO.
Also, you can take multiple approaches with the content creation, you can create posts only with article snippets and read more links to source or, you can create full content posts, without linking back to source, however, in this case, you will also need to use an article spinner service to rewrite articles and make them unique. Supported premium spinners in the plugin are SpinRewriter, The Best Spinner, WordAI, SpinnerChief. You can also summarize content using TLDRThis.
I hope this info helps.
Regards, Szabi – CodeRevolution.