Did you message the email that is on the Open Source website? Its an actual person and they super cool. Or atleast with me. I sent them a nice email about releasing the source for one of the Esteem's updates, the person messaged me back within 12 hours (I emailed them at like 2 am Ahaha) said it hasnt been posted yet (which i obviously knew) and said they'd forward my email to the dev team and they'd email me when posted. Within 24 hours after forwarding my email, I got an email from the dev team/department saying my request was fulfilled and the source code was posted and even gave me the link.
So if you havent I suggest emailing the email thats on the open source website