From the blog "C4DS plugins"

Conversion of my plugins to R20 is completed.   I have recently informed existing customers of Seamilar and PolyGnome about the news, and am giving them now priority to upgrade. Soon I will make an official announcement here at the C4DCafe, after which everyone will be able to purchase Seamilar, PolyGnome and/or Dials. And this for R16 - R20, Windows and/or macOS.   Edit:   Plugins are now available at https://toolspixels.be   During the month of