SD plan, says "your skydemon licencs could not be used to obtain live data. This usually means that your Skydemon subscription has expired. If it has, you can purchase a renewal through our online store"

If you're using an old version of SkyDemon, you may need to log out and back in again for it to be aware of a renewal you have applied to your subscription. Once you've done this, do ensure you've upgraded to the latest version of SkyDemon.