Some users have reported stability issues with the Study Gateway Roku channel. We plan to update our channel with fixes for these issues as soon as we can. In the meantime, try removing the Study Gateway channel from your Roku device, then re-add the channel back onto your device and see if it opens correctly. Otherwise, we recommend viewing Study Gateway on our website or mobile apps for iOS and Android. If you wish to view Study Gateway on the TV, you can also try connecting a laptop computer to your TV.