The important part of this email only mentions that the e-mail address you applied for to get your account back and contacted the American service blizzard company does not match the e-mail address you registered. If you want to know more about this account, you need to contact them with your email address when you registered. Blizzard will admit that this is your own account and tell you why this account was blocked! If you want to know more about this account, you can also call the toll-free number 1800 to consult the charging dep (belonging to the charging department).
In the end, I didn't say why I was blocked. This is sheer nonsense. I ask you to clean your computer regularly, kill virus, change your account password regularly and so on. I also said that I asked you to click the link to download a form, consult or ask questions or get your account back. I guess it's not as simple as stopping the blockage. Probably it was stolen or you played too much. Maybe your IP is domestic, and they like to block others.