When your PTS password changes, you must update it in the Filr Desktop Application console. You will likely see a prompt asking you to do this, but you can also change it manually by completing the following steps:
Find the Filr icon on your system tray:
Right click your mouse and choose "Open Filr console"
Update your password in the password field and select "Apply".
Your password will be updated any your files will now sync to the PTS server.