@Manoj0251 on-chain payments to Brave Wallet is still not available to everyone. It’s gradually rolling out, which you can read more about at PSA: Current and upcoming changes to Rewards and Creators
In terms of being able to connect to Uphold, the error you’re sharing makes it seem you haven’t updated everything. Keep in mind that API reports your country based on your passport. If you only have changed your address and nothing else, it wouldn’t be valid. Basically, you have to prove American citizenship/nationality and not just residence.