Multiple problems with account

This is for Maurizio if he is available:

I am Michael Clark. I have moved from Australia to UK, but am unable to amend my account details:
I don’t know which email address is registered with you. Could be mikeaa@bio* which is no longer. I don’t remember my password. I don’t remember my user name.
Appreciate your help.

Thanks a mill @Mike!

I’m sending you a DM with the instructions