You'll likely need the customer support agents to remedy this @AngxiaoZhao
To contact a Customer Support Agent, send a private message to them by clicking here. You’ll need to be logged into your Community account for the link to work.
Watch for their response in your Community private mailbox which will be indicated by a number on the small envelope icon to the left of your Community avatar, or tap your Avatar down in Messages.
The other option is to wait, or try a private or incognito tab after clearing system cache and cookies... but even that sometimes doesn't work in this case.
