3SKENG - trying to purchase and set up

I am trying to download and install Add-On 3SKENG - Pipe. I need help doing s0 (It’s not intuitive). Does anyone have a contact or location where I can get some live help?

Did you check their support/faq page?

http://www.3skeng.com/en/support.htm

The download page tells you in the first sentence

Learn how to download, install, troubleshoot, activate purchase 3skeng by following the guide

https://www.3skeng.com/download/3skeng-Starting-Guide.pdf

If the extension comes as a RBZ file, then the SketchUp Extension Warehouse User Guide has a page to explain …

https://help.sketchup.com/en/extension-warehouse/adding-extensions-sketchup#install-manual