Getting fish:// protocol to work

Hi,
Was using fish protocol a while back. haven’t used for a while, and now can’t get it to work…

My main PC is Tumbleweed, fully up to date, and trying to connect through Krusader to 2x Ubuntu 22.04 desktops.
Krusader and kio-extras installed on all. What am I missing?
Get message “Error: Could not connect to host xxx.xxx.xxx.xxx”.
(Also posted in Krusader forum.)

Thanks.

ssh is working?
wrong IP or password?
Firewall?

Use ssh/scp to these machines all the time…

Sorry, since discovered I was being an id10t, as had an .ssh/config file setup for connection, but was also adding config in Krusader…
Thanks!