This is best done with an FTP program such as FileZilla, which you use here can be downloaded for free for Windows or macOS.
Windows:

macOS:

Use the following settings:
| Protocol | FTP – File Transfer Protocol | 
| Host | s2.davigon.com | 
| Port | [leeg laten] | 
| Encryption | Use explicit FTP over TLS if available | 
| Logon Type | Normal | 
| User | [username you will receive by email] | 
| Password | ********** |