With the ability to load the app on tablets, smart phones, and the Pik box itself, many people will want to use more than one at a time.
How many devices can be using the same account at the same time?
@Roger_H were you playing content on all 3 devices at the same time? the app will allow you to log in to more than 2 devices but should block playback on the 3rd device. Navigation of the app is not blocked.