It is based on older builds of PixInsight 1.8, such as the "Ripley" releases from 2013-2018.
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Imagine you have 400 lights of the Andromeda Galaxy taken with a CMOS camera. Using stock PixInsight 1.8, you run WBPP. It works, but you notice the corners are slightly noisy, and the drizzle map is soft.
This report addresses the search term "PixInsight 1.8 - E3DDY download." Analysis indicates that "E3DDY" is likely a specific release group label, a username, or a file naming convention associated with pirated or unauthorized distributions of the astrophotography software PixInsight.
"E3DDY" refers to a crack or unauthorized patch created by a user of that name to bypass the license verification of PixInsight 1.8