this is the best explanation, I think
I will explain it more because why not
open heat folder > Heat_Data > Managed > open HeatSDK.Core.dll with dnSpy or something similar
you can just type "authenticated" in the center search box, double click the result, and right click to edit the authenticated bool from false to true. that is the simple way.
if you want to manually look for it, expand these:
View attachment 3398179
then scroll down until you find Options and either click on it or expand it to find the authenticated bool. right click and click edit, change false to true and compile.