As several users have previously stated, you can do the nuclear option of uninstalling uphold but in modern Android this is unnecessary. Merely long hold the Uphold wallet app icon, click app info, scroll to “Open by default” and click it, click the “open supported links” slider to turn it off. Go back to brave browser and complete the authorization. Return to the Settings window and reenable the “Open supported links” slider. Back out of app info. Literally profit.