After claiming the Unstable Cores from rewards I looked to see how many I had accrued, but they do not show up in my inventory or anywhere else that I can find. A quick update, they are exactly where I never look. Next to the glimmer count in the inventory. Thanks to LadyGrey for the assistance. Maybe this can help others that have become blind to sections of the screen that they've stopped noticing. 😂🖖🏻