I used Dropbox to transfer files from my laptop to my new PC. All of my photos since 2015 are now missing.
I had over 200gbs to move so completed the transfer in 3 stages. Uploading to dropbox, saving to documents on new PC then deleting dropbox files. I factory reset my laptop. I decided to have a look at my files and my folders have nothing but empty folders in them, almost everything is gone. I've restored the deleted folders, it says restoring x amount of files and then the folders are empty. Any ideas on how to fix this or have I lost 9 years worth of work?