Loss of data on Zotero 4
One of my PhD students is losing data of her Zotero library (not all the data, just some of them). She did not back up, and the data are also missing online, on the zotero.org web site. Is there any hope? She is using Zotero 4.0.29.23 on Firefox, on a PC, her Firefox version is 56.0.
The dates of the folders within the 'storage' subdirectory should give some indication of the time range covered by that data directory.