So being the eager beaver that I am, I pre-ordered the quartet of remaster books almost as soon as I could.
This afternoon I received an email with a code for Player Core for free and a link to the upgrade info post. (interesting that I did not receive a code for GM Core too)
obviously I now need to cancel my pre-order so I can apply this code. is there a hidden section of demi-plane that I’ve been unable to find where I can do this?
Not hidden - we just need you to submit a support ticket and we will process the refund(s) and queue you up for receiving the product keys.
I tried signing in to create a ticket but it’s giving me “Email address / password combination is incorrect”
also, as a site improvement suggest, access to our billing history and the ability to cancel pre-orders wouldn’t go amiss 
Howdy! The support desk is a third party website, so it won’t use your Demiplane account credentials to login.