well, there might be a away:

  1. uninstall current product
  2. install some trial edition (not the free one)
  3. insert your secureline paid license (with connected free license)

like this, you should end up with:
AV Trial active
AV Free available
SecureLine VPN paid active

but I am not 100% sure,
hope this helps:)

Regards,
Jiri