Please answer my question. Hearthstone legend can't be played. It's always like this. What if it's useless to reload the game?

Maybe you're missing something

Go to official website and visit more

Find something called Battle.net

Start it with this thing

Oh, right? See your screenshot? There may be a battle net? If there is? You go to official website to register a number, then give it a name or something, and try again. As long as you can get into < P >, it means you have succeeded.