Dropbox removed ability to opt your files out of AI training

Check for old shares. I had EVERYTHING deleted, from files, recycled bin...For nearly a decade already. BUT. Today I just found there were old shares of those deleted files. I clicked to delete the shares too. Guess what, the files were back onto the dropbox folder as if they never were deleted a decade ago! So I had to delete them again, and then from the recycle bin. And then deleted the account.