Runey,
I recall you stating you asked Illusion for permission prior to starting.
Simplest way out is to send Patreon a reply indicating the complaint is groundless because you use <X> package and not the package(s) identified in the takedown request and have permission from the owners. Include a copy of the email chain with Illusion where you asked about licensing and they told you to go ahead.
I can't blame Patreon from responding to a DMCA request; they need to legally. They should refuse the takedown request once you provide evidence the request is groundless.