Some apps stopped working: YouTube, Disney+ and after resetting the smart hub, logging in again, the only ones that are showing are Netflix, Prime, Hulu, Vudu, Tubi and TVPlus). I actually didn't have to select them. They were already there. When I click on Apps to find the ones I want: YouTube and Disney+, nothing comes up. A page loads with the title APPS and it is empty. Not even an error message....Nothing. How can I fix this?