Since February I've been feeding a Calc spreadsheet ( .xlsx extension). Surprisingly , today there was only the initial structure of my work within the spreadsheet ! The document is stored on my hard drive , on a shared Google Docs folder with my other devices. Please help me to recover my data ! I am a teacher , and there are reviews of students there. Thank you
We don't know what your other devices may had done to your shared folder, likely on one of them you "updated" the file with an older version. Our crystal ball is broken, unfortunately there's nothing we could do for you other than telling you to restore the file from the last known good backup. Yes, you probably don't have any because otherwise you wouldn't had come here and ask for help. If you have the Backup function enabled within LibreOffice you might be lucky finding a more recent version of the file on one of your devices that you used to edit the file, see Tools -> Options -> Paths "Backups" for the path where to look. Sorry. There's nothing else we can do for you. However, this is not a help forum but a bug tracker. For questions related to LibreOffice you may try at https://ask.libreoffice.org/ but in this case more promising at Q&A sites that specifically solve problems related to Google Docs shared folders or data rescue specific to your operating system.