As usual for Chinese developers this steals a and illegally distributes non-distributable build of FFMPEG DLLs in a closed source product. Look in avcodec-56.dll with any hex editor and find the text “license: nonfree and unredistributable”

SO it’s not only illegal is some countries for breaking the DRM of apple TV and in other countries for having a sole purpose for illegally downloading and removing any DRV for unrestrained use of copyright video content it is fundamentally illegal for distributing code that infringes live patents or has a fee attached to it in some way. .

Using this software will put your apple tv account at risk of being banned for breaching their T’s & C’s by connecting to their servers using an unauthorised software downloader and if your apple tv account is tied to your apple hardware you could lose access to all your app purchases and maybe even locked out of your phones and pads.

I think people should definitely be cautious with software like this, especially regarding account safety and DRM policies. Personally, I’d never use my primary Apple account with tools that interact unofficially with Apple services.
That said, the “you could get locked out of your phones and iPads” part sounds a bit exaggerated to me. Account bans for violating streaming terms are possible, but full device lockouts are another level entirely and I haven’t seen reliable reports of that happening from free online games downloader tools alone.