Foxit PDF Reader doesn't allow me to add bookmarks anymore!

Hi,

Foxit asked to be updated and I accepted it.... Now I can't add bookmarks to PDF files.

I went to their website, and they now have a "Foxit AI Chat" thing. The AI chat bot says that I still can add them.... but I tried on various PDFs, including where I already had added bookmarks, and you can't anymore....

Does anybody know if I can go back to a previous version? Otherwise, I'll need to change PDF viewers.... I use bookmarks A LOT....