The current version of Act! is v21.1 if you are using a version of Act! earlier than v18.2 it is no longer supported. This means that it is not possible to purchase additional licences OR register the software in the event it has to be re-installed due to the original third-party licencing service being suspended.
If you have an earlier version of Act! we can supply the latest version, advise you on options and assist you with the upgrade process.
There are links to information on some earlier versions below: