Unfortunately, it seems like the AMI version does not allow input of authentication codes, yet there is no option on the original amazon marketplace page to upgrade.
License Manager
This page shows licenses activated for your Access Server, and allows you to add new licenses.
Installed License Keys
The license keys that are activated for this Access Server installation are shown below.
License Key Type Concurrent Users Expire
AWS Paid AMI 10 n/a
Concurrent User Limit:
Licensed for 10 concurrent users.
