Hi @lrsmith! Welcome to community!
Please use the following steps to activate your in-home device:
From the web, visit www.pandora.com/[brand of device] and enter the activation code there (e.g. www.pandora.com/yamaha).
Or, from a mobile device, open the Pandora app and go to Settings, then tap Device Activation and enter the code.
Finally, select Continue on the in-home device.
When I launch the Pandora application there is no place to select "New User." Clicking on the "T" icon I can choose Settings, but it just brings up account information, nothing to do with connecting to a device. Very frustrating...