Pauline,
My employee uses Remote Utilities (free version) to connect to our office computers. She has tried to update 3 hosts after the deadline (which she wasn't aware of). She was able to update the viewer. She has not been able to update the hosts. When she tried to follow the instructions you listed above, she got the temporary license key and it tells her that she already has a license key, but it is not the one that will work to update the hosts...
Please help!