According to their website, even the Essential Edition of PL has luminosity masks as a new feature - DxO PhotoLab 7 Essential
Now I know that’s not the case unless you have an activation code for FP so why doesn’t DxO? The website is definitely misleading in this regard. Whether that is because it was once planned and then later restricted to FP only and the website forgotten about or it is feature has been included on the website to deliberately deceive - you be the judge. Either way, its reflects badly on DxO as a company.