Cannot find TT_Lib2 (v2.0.0) in Sketchucation

when I click on * TT_Lib2 (v2.0.0) link I get nothing

Get it from the Extension Warehouse.

The link for it at Sketchucation is SketchUp Plugins | PluginStore | SketchUcation

Or use the Sketchucation Extension Store tool to install it.

2.0.0 is old. The current version is 2.14.0

You can get it from sketchup extension warehouse, on the website.

TT_Lib2 v2.14.0 works - just go through the PluginStore or use the ExtensionStore³ dialog from the SketchUcation Toolset…

That old link you gave is no longer valid.