Thank you Sergey N, that solved the missing disconnect window. However I still have the original problem - changing these options doesn't resolve it.
If I physically sign out from my media PC and then try to access it remotely from my laptop I can connect and get to input my pin number to sign in. BUT then I get a message the image has changed and then another message stating "Waiting for new image...." and that is as far as I get - no matter how long I leave it.
FTR. The remote PC has in fact been logged in and is showing the Desktop but I don't see it just a blank screen with the message above.
I am testing LiteManager Pro too and I do not have that same issue. When I physically sign out I can always gain access with LiteManager Pro but not CloudBerry Remote, sadly.
With PCs on the same site I can work around it, but with PCs off site it is a disaster.