I am also having the same problem - completely locked out of my account - I am a PREMIUM paying member
I have sent my login details as suggested to the Goto Support Manager private message as suggested.
Are you saying your private messages to the contact person mentioned are not getting through?
Has everyone in this thread has their Lastpass 2FA problems solved?
I'm still wating... there has been some delays for me ... but I'm just wanting to hear from others.