So how did you get it to work?
Answer:
Make certain you download specifically, this file for java:
Windows Offline (64-bit)
(file will look something like this: jre-8u261-windows-x64.exe)
When you go to run Nitrogen, I did so from the command console like so;
java -d64 -jar nitrogen.jar
That forces the 64 bit version, if an error pops up, you don't have the "64-bit" version installed.