Apps come and go without notice and the makers are not notifying or making a web page of the changes.
For all software issues we have to call the maker to see if they still have the app or find out if they forgot to add it to the collection.
Two problems related to the App selections.
1. VUDU disappeared after factory reset. Just gone.
2. TED Talks accessible, but with bad message: "temporarily unavailable in Vewd App Store" ???