Should I change my Free Download Manager's proxy settings if I encounter a 503 error?

Changing your Free Download Manager's proxy settings is unlikely to resolve a 503 error if the issue is with the destination server's availability. However, if you suspect your *proxy* server is having issues or is overloaded, and you're trying to connect to the download server *through* that proxy, then reconfiguring or disabling the proxy might be worth trying. But the primary cause of a 503 is usually the target server.