Hi @imran-siddiqui, thanks for posting in the Lucid Community! If your work is lost, there are a few things you can do:

• The document(s) may still be there. Can you double check that you're in the correct account? Sometimes users will use single sign on while signed into a different email account, which can produce errors. I suggest that you make sure you've checked any and all Lucid accounts that might be under your email address(es). 
• If you can see your work from the docs list, but it’s gone once you open your document, then check out this Community post (in English)!
• It is easy to accidentally delete documents. Could you please check that the documents aren’t in your trash? If the document is in the trash, check out this Community post (in English).
• If the documents were shared with you and now you no longer see them in your account it is possible that whoever shared it with you rescinded your access. We would recommend reaching out to whoever owns the document to have them re-share it with you.
• Your documents might be hiding in your browser history. If you carefully look through your browser history when you last worked on the document, you might be able to find it. 

If you still cannot find your document(s), please let me know!