SCRAM Authentication with MySql? Scheme

Hi there,

Im in the process of setting up a chat server with as database MySql.
I got all that up and running, but I'm trying to enable SCRAM Authentication.

This post https://www.ejabberd.im/node/24818 says: If you use the default ejabberd SQL authentication backend, you can now enable password encryption in the database using the standard SCRAM approach. We also provide a tool to migrate your existing authentication database to the new SCRAM secure scheme.

I've been looking for this tool, but I can't find anything, or any instructions anywhere.

Well, the concrete problem I'm having is that if I enable auth_password_format: scram, I can no longer login, and every register command returns User x@xalready registered at node ejabberd@localhost... I think it has something to do with the scheme though

So, does anyone know where I can find a scheme that works with SCRAM? Or where this migration tool might be?