The official download link of Web Platform Installer (Web PI) https://www.microsoft.com/en-us/web/downloads/platform.aspx is broken for a few days. If you search via google or Bing, you might essentially get a broken link like me.
Fortunately Microsoft IIS site has an alternate download link : https://www.iis.net/downloads/microsoft/web-platform-installer
The link is working.
I accidentally made a purchase of, $99.99, on May 5, 2018. I have tried to reach you several different time throughout yesterday and this morning, May 6, 7, 2018, I’m feeling very discouraged about this situation. I now will allow my Bank to handle this mater.
Thanks for your update.