Deauthorizing ADE 3.0 without opening application

I have an older Nook that only worked with ADE 3.0. I recently updated my Macbook to Big Sur, which won't work with ADE 3.0. Now I can't open ADE 3.0 to deauthorize my account there. I want to deauthorize 3.0 and then authorize with the updated version. Can anyone help me with this?