Earning and Spending Points Strings are not showing at Admin Order
This issue is caused because rewards.xml and the rewards template folder are missing from "app/design/frontend/base/default/layout/" and "app/design/frontend/default/default/template/" respectively in MageRewards 1.6 or higher.
To resolve the issue, rewards.xml and the rewards template folder must be uploaded to "app/design/frontend/base/default/layout/" and "app/design/frontend/default/default/template/" respectively.
For more information on why this is the case, see Additional MageRewards 1.6 Update Steps.