You can use the OTC service in Bitget Wallet to purchase cryptocurrency, such as USDT, USDC, or REZ with fiat currency. Bitget OTC service accepts Visa, ApplePay, GooglePay, and USD credit cards: 1. Select "OTC" on the Bitget Wallet homepage. 2. Select “USDT” or other tokens you wish to purchase, e.g., USDT on the "Ethereum" network. 3. After payment, you will see the purchased USDT on the Bitget Wallet homepage. 4. Tap the “Swap” button and swap from USDT to Niza Global （NIZA）. Enter the amount to swap. 5. Tap “Confirm”. Once the transaction is completed, you will see the swapped Niza Global （NIZA） on the Bitget Wallet homepage.