If you are looking for a "better" or more reliable solution for hierarchical note-taking, several modern tools offer similar or superior functionality with active support:
Fortunately, the note-taking landscape has evolved significantly. There are modern, secure, and incredibly powerful tools that act as a much better alternative to an old, cracked copy of TreePad. The Core Risks of Using Cracked Legacy Software
Instead of basic text matching, newer tools use blazing-fast indexing, Boolean operators, and global tags to find data across massive databases instantly. The Best Free and Modern Alternatives to TreePad