I made sure the lid was closed properly and tried again…will not spin forwards. I carefully used a screwdriver to hold up the black plastic arm, and the machine stitched both directions (was not threaded or anything), so I assume the broken piece on the black arm is causing an issue.
I have emailed a Bernina repair shop in Amish/Mennonite area a few hours from us and explained the issues I am having. The shop comes highly recommended on our state’s quilter FB page, so I am hopeful they can help. Thank you for all of your help!