The only additional info I can give is that when the video stalls, the only things it will allow me to do is to go to the Google Play Store or get privacy info in a browser, that revealed that the company behind it is called Ironsource.

The video came up twice this morning, after force closing the app each time I got another video. I watched 4 videos, got 2 rewards and then the bonus button disappeared from the app.

I'll post the Ironsource screenshot in a subsequent post.