Plays.TV Watermark in v1.23.0 from the release notes:
Version 1.23.0 - 5/3/2017
We have added Plays.tv Watermarks to recorded videos. This includes the Plays.tv logo followed by @ then your username
(1). Why have you done this?
(2). How can I remove it?
(3). Could you possibly have made it any bigger? It ruins gaming videos.
Please remove it or I seriously walk away from Plays.TV completely.
This blog post should pretty much explain every question you have?