@JeffNZ1 - thanks so much for your help - really appreciated.
I have finally managed to connect to orchestrator.
I had tricky problem …
in the bottom right corner of studio
I could see the ‘Robot Error’ light
but the orchestrator connection icon says you are connected (refresh)
the way i fixed was by running UiPath Assistant and ‘Signing Out’ from within Assistant.
You can see here that both Robot and Assistant had the same Orchestrator Configuration details.
Signing out from within Assistant magically stopped my problem.
… very crucial point … you have to sign out from the screen below.
( you can’t use the ‘disconnect’ button from within Assistant / Preferences )
But @JeffNZ1 … thanks again for your help.