Sync button to Tv/Roku disappears on app

Over nice app offering for media but frustrating Operating it. There is a sync button on the top of the app to sync to your Tv Roku etc. once you use it and cone back later on your iPhone it’s gone so you can not sync again unless you delete and redone load the YouTube TV app. This happens daily PLEASE fix this as the app is unreliable I and very tired constant deletion and reinstall action of the app to get my sync button back.

Marshops about YouTube TV, v1.11.7