Change username or delete account

I would like to change my username or to delete this account, free my email and be able to create a new one with a different username. Reason is I don't use this name anymore and want to be consistent over platforms. Note I don't have any license yet but want to buy Serum 2 afterwards.

You can change your email into something else, to free up your current email.

You can change your email into something else, to free up your current email.

Didn't think of that, thanks a lot!