Thanks for all the help earlier - I couldn't see a way to reply, so wanted to update and put additional information here.
I have de and re-registered the console which has succeeded, by the directly following sync fails once again.
When logging in to https://protectcloud.shavlik.com/CloudAgent/Home/AgentKeys I can see the console registered, but Agents show no policy is available.
Moreover, once when going to Tools>Options>Protect Cloud I got the attached error message that the service couldn't be reached.
There is no specific step information/error detail that I can see in the Event History. I have attached some relevant screen caps.
Many thanks for all of your help.
Retrieving data ...