I recently started running my YouTube channel, which doesn't have many videos.https://www.youtube.com/channel/UCTFwIP ... subscriber
More videos on bilibilibili.com https://space.bilibili.com/30865505
Recently, sm3281 and cbm2199 controllers are under development, which can solve about 30%

"1. Add the shortcut key of direction key to make the virtual key bigger (too small often leads to wrong operation) "

I'm not sure what you mean by that ..

"2. Add the function of overall zooming in picture, which is more intuitive than local zooming."

Yes, I know. And you're right. Problem kinda is I am not that much of a programmer and this kind of organically grew to what it now is .. Probably a lot of stuff what I will need to rewrite so this is why I'm kind of ignoring this .. But it's something I'll address. 9 out of 10 times if you actually start working on something like this, it's all a lot easier than you imagined beforehand.

Thanks for you feedback though!

"I was helpless, but YouTube didn't act, and email didn't reply"

Yes, it appears as if Youtube has become a beast that largely runs "on it's own". If you run into some kind of issue it's hard to get a human to actually help you. And if you finally get a human to help and correct things, 'algorithms' undo his work one hour later. Far less serious than your case, one of the thumbnails of my videos, according to some algo violates YT policies or whatever. But it's just a screen capture from the video itself. I now have had a human correct it 5 times. Each time after the video thumbnail re-appears, the algo takes it down again. Such bullshit.

Ah! Thanks, understood!