Almost three weeks ago now, on January 18th 2022, I made a post to the Brave browser subreddit on Reddit posting about connectivity issues between the Brave browser, and Gemini - and resulting ad/rewards issues because of it since the 13th of January 2022.
Almost immediately I was met with a mod response saying that they were aware of the problems, and linked me to a stickied message from the moderator team that they were working on this, and expecting it to be fixed in "the coming day(s)". Previous to my post, there was no mentions of other problems from the mod team, and from what I could tell - no other users were posting about this specific issue.
It has now been three weeks since the initial bout of issues began, and the message from the mod team continues to be that they're working on it, and have identified the problems, but continuously are pushing out brining it back online. As of today - February 4th 2022, there was another update on the Reddit post made in response to my post stating that they were delaying the updates until February 7th 2022 "US time".
You can check out the list of updates on their Reddit post here: https://np.reddit.com/r/BATProject/comments/s6fiy6/verifying_brave_rewards_with_gemini_is/ and it seems like they might have a fix soon, but considering that has been the sentiment since only a couple days after the issue was reported on the 18th, who knows when we'll be able to earn rewards again.