Maybe they were beans from before it went so haywire there? Or maybe the fair trade cert isn't the greatest... or it hasn't been updated, like, with an inspection, since before the mayhem.
If you open a new tab on brave, there is a gear icon on the bottom right that should take you to your various settings pages. One of them is Brave Rewards, where you can check out your balances, and turn on/off your ad settings and contributions.