HBO Go

Hello, I am having an issue with my Tivo Mini and before I call Tivo customer support I was hoping someone in this community would have an answer. I have a Tivo Roamio and a Tivo Mini. Last week could access HBO Go from my Tivo Mini and this week the app has completely disappeared. Any ideas? I have tried resetting it but don't have a lot of other ideas at this point. I intend to call Tivo on Monday and talk with customer service but I was hoping someone here may have an idea. Thanks.