On my laptop at work recently our IT guy reset everything, so I had to re-install Brave Browser today, but when I tried to activate the Rewards and connect to Gemini (this is what I’ve been using for that past couple of years) it says that it’s not supported in my country (Romania).
In your case, you uninstalled and therefore lost your “already connected” profile. It sees you as a brand new person, at which case Gemini is not available for anyone at this time.