I have an old Sony TV that otherwise works well. Amazon Prime and Netflix load brilliantly. When try to log into Kanopy on Roku, I first go into my channel line up menu and click Kanopy. Then it will start to load and then drops, and can go dark or it reverts to the main Roku screen, This can happen repeatedly. Or, sometimes, after several tries, the Kanopy logo appears. Whe when I try to navigate the various options with in the Kanopy screen it drops. I have a Roku model 2 - 2720. Would it a newer Roku help and if so, which model?