Hi, The installer does not run on 32-bit Windows. The plugin itself should work on 32-bit Windows. If you install the plugin on 64-bit Windows, then you can copy the plugin DLLs across to the 32-bit Windows, and they should work.
For CLAP, copy "C:\Program Files (x86)\Common Files\CLAP\Fluctus.clap" on your 64-bit Windows to "C:\Program Files\Common Files\CLAP\Fluctus.clap" on your 32-bit Windows.
For the FL Studio native, copy the "Fluctus" folder in "Plugins\Generators" of your FL Studio folder from your 64-bit Windows to your 32-bit Windows.
Let me know if you have trouble getting this work.