It happens that the old account for some reason stops working or is no longer relevant, what to do in this situation?
You can do it in the Payouts tab in your dashboard
Also, you can ask support here
But the current account cannot be deleted there.
This is really hard process, if you want to change one Payoneer account to another Payoneer account, both Envato support and very slow Payoneer support should be involved. But contant Envato first. Our accounts could not be transfered to other persons, so probably ID check will be applied in your case