Gemini users were enabled to connect irrespective of the geo location if priorly connected to Gemini before the regional changes.
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Dear Brave Community, In consultation with the team at Gemini, verifying Brave Rewards with Gemini will now be limited to Gemini accounts in the United States (US). Existing users connected to Gemini If you are already connected to Gemini (including with a Gemini account that is not from the United States), your Rewards profile will remain connected to your Gemini account, and you will continue receiving Brave Ads earnings payouts to your Gemini account. If you press “Disconnect from Gemini”…
See the latest post in the above topic and you can see it for yourself.