Logging into standalone client with steam account

So I've been playing PoE on the steam version of the game and I kept hearing about disconnect issues etc are sometimes fixed while playing on the standlone client.

I was wondering how can I login to the standalone client with my steam login?

You send an email to support here: support@grindinggear.com

And you ask them to "unlink" your steam account.

They will ask some security questions and request an email address to link to the newly detached account.