Does no longer supported mean no longer available? Reason I ask is, I was trying out Cloth works and it says it depends on SketchUcation Tools version 4.0.0 or later. I'm guessing now its impossible to use or licence Cloth Works using Sketchup 2016, as I likely cant even run SketchUcation Tools version 4.0.0 or later anyway. Never mind then. Cheers for your help.

I must be an absolute plonker but I've been trying for over 1 hour to try and track down ExtensionStore v3.1 plugin so I can install it on a V2016 SU install. I literally cant seem to be able to locate it. I can find the latest version very easily and can see that it talks about compatibility of previous versions but have failed so far in trying to find those versions actually available for download. I can only assume its staring me right in the face but I cant see it. Any help would be greatly appreciated.
Cheers, Adam