Synology CloudStation SSL Certificate Changed Warning
If the SSL certificate has changed on a Synology CloudStation server, the following steps must be done to re-connect a client PC to the server
Locate the Cloud Station Drive icon in the system tray.
Left-click to open the application, then click "Main App"
When opening Cloud Station Drive, you will see a warning as shown below
Click Edit Connection as shown below
Next, re-enter your password as shown below:
After re-entering your password, the connection will start re-syncing.