Update 10.02.20: By updating the Google Drive API to version 3, problems could finally be solved in Password Depot 14.0.2. Thus, we recommend to use build 14.0.2 of the Windows client at least.
Since about 7 February 2020, about midnight, downloading password files from Google Drive is not working anymore but instead the error message “Unknown format” appears.
Currently, we assume that this is a temporary problem of Google Drive because we have no proof of any errors regarding Password Depot.
Workaround for older versions:
We can only suggest, as workaround for previous versions of Password Depot, to copy your password file to your local system or temporarily store it to another cloud service.