I can route you the best support available on how to handle this, farmerswife.
I'd suggest reaching out to our Customer Care Support team to have this checked. They have necessary tools, like screen sharing, that can help you resolve your concern. Here's how:
Click the Help icon, then the Contact Us button.
Type "Credit Memo" in the What can we help you with box.
Proceed with the Let's talk button.
Select either Start messaging or Get a call button.
Also, check these resources for additional reference: