In March of this year I voluntarily admitted myself to an inpatient facility for mental health reasons (anxiety/depression). A couple of weeks after I was discharged, I received a letter from ISP informing me that my FOID card was revoked for due to my hospital stay. It additionally stated that it was revoked due to me possible being a danger to myself and to others, though this is a completely false assessment. I've never had any medical professional ever state that I was a danger to myself or to others.
I am wondering what can be done about this situation. I surrendered my FOID and filed the firearms disposition (gave my firearms to a close friend until this gets resolved).
I have yet to appeal this and am seeking guidance on the best way to do so. I am assuming since this is within the 5-year window that I will likely be denied but I do want to start figuring out how I can at least get my FOID back someday. I do not have a criminal record or anything else that would prohibit me from having a FOID.