A serial key may include certain limitations set by the streaming provider. Please contact the streaming provider for more details.
This dictates how many devices a viewer can use to stream the content simultaneously. For instance, if the limit is 1 device and you are already streaming with a device A, a secondary device B's connection will be blocked.
If the active period is over, a serial key will be deactivated even if it has not been used.
This dictates how many times you can watch the content for a particular duration. If the limitation is up to 3 one hour long streams, for instance, then you can watch the content 3 times, each within an hour continuous play.
If your play exceeds an hour, then it counts as 2 plays. (For example, if you play the content for an hour and half, this counts as 2 plays and you will have 1 more play left.)