@ivovaladares Gemini is only available to the United States at this time. There are exceptions to specific browsers that had been connected before. So your Desktop likely had been connected before but your phone wasn’t. Keep in mind uninstalling and reinstalling Brave counts as if it’s a different device. Same with formatting/factory reset of your device as well.
So what you’re explaining sounds like everything is working as intended. You can see more at the links below.
https://support.brave.com/hc/en-us/articles/6539887971469
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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”…