[meta] Can't log in to Unity forum

I can’t log in to Unity forum with any browser. I tried clearing cache with no luck. Every time I log in, it shows the following error:

Unity Community - Error
Email addresses must be unique. The specified email address is already in use.

I know this might not be the right place to ask for help but I don’t know where else to ask. Please help.

That error means someone else is using that email to log in that forum. Simple do a password reset, and ask to be sent the recovery email. Then you can create a new password, and gain access to the account.