Question about digital products and webflow hosting

Hello,

  1. download link URL has to be from webflow asset folder? (after optimization processes, bigger than 4MB digital files have to be another place as far as I understand)
  2. can we use dropbox links as download URL?
  3. can we use webflow hosting for purchased digital products’ files rather than assets?
  4. after a buyer bought a digital product, user gets a download link. Is there any way user can share that link to others and if so what we should do to prevnet that?

thank you