Thank you! So I guess it's unlikely I messed things up too badly.

And I see there are different types of relays, "public outbox" relays, "public inbox" relays "home" relays and "DM" relays. And seems you can turn them off and on by clicking the green symbols (Pic rel)

I guess I'll figure out what that all means in time. I have much to learn. Thank you again.