Try this
- disable ads
- delete client.json on this directory
- windows: C:/users/username/AppData/local/BraveSoftware/Brave-Browser/User Data/Default/ads_service/client.json
- ubuntu: /home/.config/BraveSoftware/Brave-Browser/Default/ads_service/client.json
- enable ads again
- wait until all files on ads_service refreshed or updated
- open website (with same segment on catalog)
- wait 1 minute without swipe touchpad or mouse and push keyboard
- push keyboard or swipe (touchpad or mouse)
- done ads will appear
its work for me on my laptop