To be honest, the structure was significantly changed in the "PO" add-on, and many things went wrong. Huge thanks for the help, I'll give it a try.
As someone who has worked extensively with the folder structure, I want to say that the principles of data storage and their use in the "PO" add-on are much more convenient... you can really see how the developers learned from their mistakes and figured out how to better organize files in folders =)
It's scary and embarrassing to even talk about the structure of the early files xD