PDF Layers Autocad 2019

Hi,

I have AutoCAD 2019 installed along with Adobe Acrobat Pro DC 2021, I was successful to load the PDFMAcad.arx, however when I try to create the layered pdf, I get a PDF with all layers switched on and switching them off/on does not have any impact, I like to use the PDFMacad because it gives the ability to arrange the layers under subfolders, and it is very helpful specially if your file has a lot of layers, anyone knows how to fix this issue or it is a bug on the latest PDFMacad? Unfortunately I can not share the drawing but I hope you understand the issue

Thank you

Noureddine