This thread is is for the YouTube TV service's app. YouTube TV provides paid live TV streaming services to multiple markets within the United States, and is an 'over-the-top' streaming replacement for cable TV subscriptions such as those provided by AT&T/Comcast/etc.
See www . youtube . tv for more info (remove spaces when entering into your browser).
While the naming is similar (and made even more confusing with your replacement app's use of 'TV' in it's title), please don't confuse regular 'YouTube' (which your app is a replacement for) with 'YouTube TV'.
With all this being said, I absolutely appreciate this topic can be confusing for some xda members if you don't live in the US (and aren't aware of the YouTube TV paid streaming service), and especially since the word 'TV' is now being used in the name of the replacement YouTube client.
(Edit - while I'm on a mobile device and can't actually check the apk, I'm presuming it's not the correct YouTube, since the original (and very good) 'Smart YouTube TV' app built by Yuriy Lyskov is a plain YouTube client).