@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.