Problem with Google Drive backend workspace


I am using chrome and trying to use my Google Drive folder for backend workspace. The connection process is fine, and two folder: .stackedit-data and .stackedit-trash were automatically created. Yet, there seems some problem with synchronizing. The two folders on Google Drive are always empty and that little clock symbol for synchronizing non-stop turning. 100% sure I am on the right workspace. Meanwhile, I am using two different Google account on StackEdit (one for workspace and another for Google Photo), I wonder if that matters.