Okay, so yes, Gemini recently restricted accounts to people only in certain regions. To see which are accepted, you can visit NOTICE: New region restrictions on verifying Brave Rewards with Gemini
If you’re unable to use Gemini or Uphold due to their restrictions, then that just means you won’t be able to convert BAT into money at this time. You will still be able to see Brave Ads if you want to keep it active and will still earn BAT. However, the BAT you earn will only be able to be stored in your browser and the only way you can use it will be to tip Verified Creators.
If you have further questions on where your BAT is stored or what to do in the meanwhile, I’ll advise you to check out the FAQ at -Retired- PSA: User FAQ - Support & Answers as it has a lot of that information for you.