Having not used WeChat for a year, they froze my account for violating its regulations. Then they get you to request a friend to unblock your account but if you have no friends in WeChat, you can never unblock your account. Requesting to unblock via email doesn't work and requesting account recovery is blocked as well. Trouble shooting the inability to log in does not follow anything logical and just traps you into not being able to unblock your account which was blocked for an unknown reason.