Hello again MasterTenchi!
There was a delay in patreon notifications reaching my email, apologies! I have already reached out to you over there!
PSD files are available as part of reward sets for featured releases during specific periods, the reply I sent you over patreon breaks down better how rewards are delivered and accessed!
There is no Librarium Discord server, Patreon lists the feature but it only works for patreon campaigns that actually incorporate a server, I am not sure why it appears on my page as it seems as a setting I can't hide/unhide myself, at least based on my own attempts that was the case orz