However, if your license itself does not show the new end date then please follow this:
1) Goto the downloads section in your account:https://aurasoft-skyline.co.uk/index.php?route=account/download
2) Click the red button hammer on your license and reset your serial.. this doesn't change the date only the activation attempts.
3) Goto "C:\Users\$(YourUsername)\AppData\Roaming\Aurasoft UK\Skyline_License" and delete the Skyline.license (this step may or may not be needed).
4) Load skyline and reactivate.. all done! you will now have a version of skyline that is updatable again
Happy dev'in
Edit: All purchased license have been extended to 2020 or beyond
