If you’re using a /24 network the IP shown in the screenshot is the broadcast IP of your network.
445 is the default port for smb. It should be the same on every os if you didn’t manually chang it. 80 is http by default. Did you maybe set it for a Webinterface?
Try adding it manually and enter the IP of your smb server, port 445 and the user/password you set for smb.