I can't log in yeelight servers except china

Recently I register my ceiling light at Alexa. It worked well.
But after deleting yeelight alexa skill once, I can’t discover my ceiling light through alexa.
So I decided to log out Yeelight US account at which my ceiling light is registered.
But now I can’t log in yeelight servers except china
After logging in, it says ‘time out’ and returns to login form
I tried to delete permit which yeelight accounts have at Mi account setting, but it says can’t.
My Mi ID is 1674380520 and I’d like to reset all my datas in yeelight account

We have fixed the issue, you can have a try again.

Well done! Everything works fine. Thanks a lot