Thanks for your reply. Apologies for my unfamiliarity with the software. When you say 'Have you downloaded and installed it', do you mean that I need to reinstall Invision Community entirely?
After the license upgrade I see this in the Client Area:
In my AdminCP I see this:
If I follow the instructions on page https://invisioncommunity.com/4guides/advanced-options/server-management/install-and-upgrade-r259/, I see a marketplace from which software can be downloaded and installed, but in my case, there is no marketplace present in the AdminCP.
In short, I'm not sure what and how to download and install.