After creating an MT5 account, you can change its password from the account management section:

1. Go to the More tab, then select Accounts > Manage accounts.

2. Choose the MetaTrader 5 account for which you want to change the password. Tap the three dots in the top-right corner and select Change password.
3. Enter your new password twice, then tap Confirm.
4. If the passwords match, you’ll receive an SMS with a verification code. Enter the code in the field that appears and tap Confirm. Didn’t get the code? Tap Didn’t receive a code? to request a new one sent to your registered phone number.
5. Once the password is successfully changed, you’ll see the message: Password has been changed successfully.

You can view your password change history under the History tab on the account management screen.