Hello,
Rewards will vary based on campaign limits and ad views. You can learn more here: FAQ: Why am I not seeing Brave Ads?
If you are seeing recent ads in your 30 Day Ad History, it is likely working as intended.
If you’d like us to investigate, please submit your issue here: https://support.brave.com/hc/en-us/requests/new?ticket_form_id=1900000382047
Thanks!