Dropbox Basic was installed on my laptop and during that process I sinqued as asked. Now all my files, pdfs, and work saved in these folders has disappered. The folders appear in Dropbox but the majority are empty! Whats is more I am being informed that my storage space is full on Dropbox and Onedrive. How do I retrieve my files? I have already tried various helpline options to recouporate them but this does not work.