Just want to ask, did you make sure to check all devices and profiles you have connected? A lot of times people have added newer profiles or device and forgot to disable.
What are you referencing? Remember that if you mean Ads Payout Status Update then where it says “December’s payout” that is referencing the payout that began around December 7 and was for what people earned in November. As always, payout doesn’t officially begin until the 7th of each month and can take several days or weeks to finish.
Create a Rewards Support Ticket at https://support.brave.com/hc/en-us/requests/new?ticket_form_id=360001302431