Why are third party YouTube apps suddenly not functioning for me?

[Windows Central Question]

I have a Lumia 640 , Windows Phone 10. I usually use Awesome Tube (it used to work perfectly but it suddenly stopped playing any vids),so I tried Tube Cast,Perfect Tube and a couple of other apps (all of which I've used before and know they used to work) , now all of them are not playing any videos. On some it showed an error message, but on most it just won't play. Is it just my phone or has something changed? Also how can I fix it if it is just my phone having the problem?