This was recently posted on dot com. Unsure if it applied to any sellers on ca but here it is for the record.
https://community.ebay.com/t5/Selling/Update-for-Shipping/m-p/34373699#M2376808
03-27-2024 10:59 AM - last edited on 04-04-2024
Due to a FedEx invoicing issue the week of March 25, 2024, some sellers were incorrectly charged for FedEx label adjustments. We apologize for the inconvenience, and eBay will refund these amounts within the next 5 business days.
-Lotz