The Personal Area is not the only place you can change your MetaTrader4 password. You can also change your trading password within the platform.
Here are four simple steps:
1. Once logged in to your MetaTrader4 platform, please, find the "Tools" menu and click "Options" there.
2. In the "Options" window, please, click the "Server" tab to bring up your account details, then click "Change".
3. Once the "Change Password" window pops up, in the provided field you will need to enter your current password and your new desired password.
4. Do not forget to click "OK" to save the changes!