That's his question - why doesn't Android have it? Keep in mind though, "Do not track" is almost meaningless. The website gets decide what it will do if it sees a "Do not track" header, and many just ignore it.

Hi @gregtd , this message is coming from the site, not from Opera. So you have to ask the maintainers of the site why you're not allowed to download the file.

A. It is not a problem, and B. if it were a problem it is in a cache file - go to Setting and empty your cache and it is gone.