This installation guide is for the new Extreme PBR Nexus 4.1 all users who have installed a previous version with libraries on the server, can continue to use the service.
Here the Blendermarket order page: https://blendermarket.com/account/orders
And here’s the one from Gumroad (Library): https://app.gumroad.com/library
I have been using your product (Extreme PBR) for a long time and I'm super happy with it. Thank you for the video Andrew!