If you do not want to share Dropbox photos anymore with anyone follow the steps given below:
- Tap the 'Photos' tab
- Select the Albums view at the bottom of the screen.
- Select the albums or individual photos you want to unshare. Albums will be listed first and individual shared photos will be listed under Other shared photos.
- Tap the unshare icon at the top-right of the screen.
- Tap Unshare in the pop-up message to confirm.
The photos will now be unshared and any existing links to these photos will no longer work. If you want to share the photos again, you'll need to create a new link to them using the steps above.