Spoke to Gemini again today. We believe there’s a solution ahead. The previous two fixes didn’t fix it for everyone, but should have fixed it for some people, and at least made the underlying cause clearer. They said they are discussing internally to see when they can deploy the next (and hopefully) final fix.
Apologies for the inconvenience, everyone. Ultimately, the Brave Rewards Gemini integration connects up to Gemini’s API, so we’ll need to await their next fix.
Note: Even though you’re in this “Logged out” state, please note that you should still be receiving payouts each month (as some other users have also confirmed).