I changed installation of my urbackup server. So I changed settings at the client. By connection to the server, it want to connect to the old entries, which I changed. So I do an uninstall, reboot and fresh install. Same thing.
Best think is to change the server side setting while it still has the old ip.
So the client get that setting and will start pointing to the new ip after a few minutes
Then change the server ip itself.