You have to change the protocol of your favorite because your host does no longer support secure connections. To change the protocol of your favorite follow these steps:
1. Menu: Favorites ->Edit Favorites
2. Locate your favorite. Look in the Quick Connect folder.
3. Right-click on the favorit. Select Properties from the context menu
4. In the General dialog change the protocol from SSL/TLS Explicit to "Normal"
5. Click OK
6. Double click the favorite to connect to your server.