My Dropbox desktop app on my Mac had not synced since December 2021. After reinstalling it, the local Dropbox folder still lists about 5.800 Camera Uploads files from 2016 to 2021, plus the folders "Photos from iPhoto" and "Af imac fyrir hreinsun" (several thousand files). These were online-only, so the local files are empty placeholders.
On dropbox.com, none of these files exist. Camera Uploads only contains files from 2024 onwards, and the files do not appear under Deleted files. My account is on the Basic plan and currently over quota.
Is there any way to find out what happened to these files, or to recover them? I have a complete list of the missing file names and sizes.