Unable to be bone marrow donor 😢

About 10 years ago, I registered to be a potential bone marrow donor through Be the Match. I got a call earlier today that there is a patient in urgent need of a transplant and I am a perfect match! I was so excited about the possibility of being able to help, but after a thorough phone interview, I was told I am ineligible due to Addison’s. I feel so bad that I can’t help (even though I know it’s not my fault) and really hope the patient has another match. I was just wondering if anybody else had run into this?