You can unlink your bank account through the Webull App.

1. Tap the Webull logo at the bottom of the screen

2. Tap "Transfers" at the top of the screen

3. Tap "Withdraw" and select your Withdrawal Currency

4. Tap ">" on the bank account you wish to remove from your account

5. Tap "Details" beside the bank account

6. Tap "Delete Bank Account" to unlink it

After removing and unlinking your bank account, you can proceed to add your new bank account.