Have I lost a app

[trickys]

Hi guys I was just editing on my phantom 4pro+ which isn't the easiest thing to do on the built in screen, but once done I wanted to post it to YouTube account, which I am sure I've done before as well as post live, but I noticed today the YouTube app isn't there and no sign in the app settings, it's gone. Now am I just doing something daft or have we lost YouTube from the p4p+ ? Any advice please..