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[Chocoholic]

You should try this if you haven’t already.

Verified Uphold Wallet not connecting to Brave Mobile

Go to Uphold.com and log in independently of the Brave Rewards verification flow. Once logged in, go into Brave Rewards and verify wallet. Follow steps Wallet verification should be successful (in 'Wallet verified’state)” Follow this method. Also, make sure your shields is down, and third party cookies are available for some time. And delete uphold native app from android for the time being