Hello,
I’ve parented the geometry to the armature. I’ve added automatic weights as well. I thought maybe it would be that there isn’t enough geometry to bend. I tried making an arm more meatier but it still wouldn’t bend.
Blender file: https://drive.google.com/drive/folders/1ymqwSzb_864n79asssBG3ipCDC5Edbog?usp=sharing
Thank you for your help!