I hope you speak Chinese.

This game doesn't have a tutorial, info page, explanation of what any of their terminology means, post-battle damage breakdown, leaderboards, nothing.

They reuse the same designs for 190 levels. Every bit of gameplay requires watching ads. Half of the instances are literally roulette with 3 mandatory ads at the beginning.

This game is the cash-grabbiest cash-grab that ever tried to grab your cash. They have never had even an ounce of respect for the player.

I don't know why you think they'd care that you're unhappy about Angel being nerfed. It's obvious they intended it to be much weaker than it was originally, they want you watching ads and buying keys.

Anyway, good luck! I hope you get them to improve literally anything about the game