If the license has not been detected after a day, try rebooting your device. This will likely force Google Play to synchronize its license data.
Also, check to make sure that both of your devices are linked to the same Google account. You can check this in the Accounts area of your device's settings. Also, the sync settings for each account should include synchronization of app data. If you have multiple Google accounts, see this article for additional troubleshooting tips.