You be app not launching by default
I use Firefox on my phone and it used to be when I clicked a YouTube video it would take me to the site then the video would launch in the app. Why is this not happening anymore. I have check my defaults and still nothing. I noticed I can click the android icon in the address bar to do this but I would prefer it happen by default
Alla svar (1)
There is a way to check if there are stored permissions in the youtube site by tapping on Settings and going to Page > Edit Site Settings
Though that is only if there are any settings stored.