For instances based on Rev 91.1 marketplace AMIs, the HANA license is expiring on Mar 15, 2016.
HANA License upgrade (8.0) is available under addons section to install new license till Feb 16, 2017
Steps to upgrade the license
Install Rev 91.2 Console upgrade addon – This upgrades HANA One console and will make HANA License upgrade (8.0) addon and other addons available for installing.
Confirm successful installation under “Installed”
Note – It takes up to 30 minutes to see new addons after upgrade.
After 30 minutes addons page start showing more addons, (ignore others)
Install the License 8.0 addon
While installing, provide proper credentials
After successful installation confirm License date (Administration) page