@Deep The publisher is us, Script Soft: http://www.scriptsoft.com
@Gary You will receive a notification if a newer version is available and you can deny the installation of updates. You may also keep the installation file so you can re-install anytime in case you accidentally accepted the update.
@allan, @Malcolm You need to copy and paste all lines of the license key. Each line may be terminated with a whitespace, but there is no need to.