The SQL Server Configuration Manager provides basic configuration management for SQL Server services, server protocols, client protocols and client aliases.
On the SQL Server Instance you will need to ensure the TCP/IP Protocols is listening on port 1433 for the TCP port. You may also need to list this port for the TCP Dynamic Ports.
If you have changed this port for some reason, you will need to deploy a custom script for the verification section in SureBackup. After performing the script change in production, please perform another backup job for verification.