Your purchase of a live webcast is for single viewing on one device at any given time. You may switch from one device to another by logging into your account on a new device. This will stop the stream on your first device. Watching on multiple devices simultaneously is not permitted. Sharing your login credentials is prohibited as stated in our Terms of Use (section 2.4

We have recently made updates to our streaming platform to help control the single license policy. If you want to watch on multiple devices simultaneously, you will need to purchase on a separate account for each device. We do not support sharing across multiple devices at the same time.