Location verification issues in Arizona frequently occur near tribal gaming jurisdiction boundaries. FanDuel's geolocation software can flag proximity to reservations as potential violation of state/federal gaming law restrictions. Additionally, cashout availability on futures is discretionary - not guaranteed. Operator may decline to offer buyout if they assess the outcome as sufficiently unlikely (City's current league position) that holding the liability is preferable to immediate payout.
Try logging in from different location within Arizona, away from reservation proximity. If verification persists, contact support directly.