The exact same thing happens to me, maybe 3 weeks ago. And he doesn’t drop me for BAT in all that time. I think this happened to me after adding dark mode but in the form of an extension, not from settings. If someone answers him, he would also be helping me. Thanks a lot.
If there are campaigns in your country the ads will come and for 1 or 2 months the catalogue gets updated so some days you cannot get ads.
If this continues for more Han 10 to 15 days then reinstall the brave
After reinstall you can get ads
Brave discourages using VPNs for the purpose of downloading ad catalogs from other countries. Doing so may increase the chances of being flagged as suspect, and result in issues with claiming tokens on the payment date.